Inurl Indexphpid Better [ 2026 Update ]
The query inurl:index.php?id= is a classic Google dork used by cybersecurity professionals, ethical hackers, and unfortunately, malicious actors.
Here is a review of this legendary search operator from a cybersecurity standpoint. 🕵️♂️ The Analyst's Review: inurl:index.php?id= 🏆 The Verdict: A Double-Edged Nostalgic Classic
This specific dork is the digital equivalent of a skeleton key for the early-to-mid 2000s internet. While modern web frameworks have largely phased out this raw URL structure, it remains a legendary rite of passage for every aspiring penetration tester. 🔴 The Good: Educational Goldmine
Vulnerability Hunting 101: For decades, this string has been the premier training ground for learning SQL Injection (SQLi).
The id= Parameter: When a URL ends in id=12 or id=abc, it is explicitly telling the database to fetch a specific row. If that input isn't sanitized, adding a single quote (') can make the database spill its secrets.
Footprinting Legend: It allows security researchers to instantly identify legacy content management systems (CMS) and PHP-based architectures across the globe. 🟡 The Bad: The Internet's Scar Tissue
Attacker's Best Friend: This operator makes it incredibly easy for script kiddies to find low-hanging fruit. Automated scanners use it to compile mass target lists for database dumping.
Legacy Graveyard: Searching this today often yields abandoned local government sites, small business portals, and forgotten school forums that lack the budget or expertise to upgrade their security posture. 🟢 The Ugly: Highly Predictable Behavior
WAF Bait: Because this dork is so famous, modern Web Application Firewalls (WAFs) and Google's own automated bot detection systems will aggressively flag and block clients spamming these queries.
Diminishing Returns: In the era of clean REST APIs and routing (like /posts/12 instead of index.php?id=12), finding a live, high-value target with this string is increasingly rare. 📊 Quick Tech Breakdown Description Primary Use Discovering database-driven PHP pages. Common Vulnerability
Heavily prone to SQL Injection (SQLi) and Cross-Site Scripting (XSS). Era of Prominence 2000 - 2012 (Still exists in legacy systems). Risk Level High for site owners; highly monitored by search engines.
💡 Key Takeaway: inurl:index.php?id= belongs in the Cyber Security Hall of Fame. It bridged the gap between web development and database interaction, teaching a generation of engineers why input sanitization is mandatory.
Target Identification: The inurl: operator restricts results to URLs containing index.php?id=, a common pattern for PHP-based websites where user-supplied IDs (like ?id=123) might not be properly sanitized before being passed to a database.
Vulnerability Assessment: Security researchers use this dork in papers to find a "target pool" for studying how often websites in specific domains (e.g., .gov or .edu) are susceptible to exploitation. Key Academic & Technical Papers
Several research papers use this specific dork as a methodology for vulnerability scanning:
Analysis of Potential User Data Vulnerabilities on Government Websites: Discusses using Google Dorks like inurl:index.php?id= to find URLs with parameters vulnerable to SQL errors that can expose database structures.
Exploring the SQL Injection Vulnerabilities of .bd Domain Web Applications: A study that used user-input based SQLi techniques to check vulnerabilities across hundreds of web applications.
Website Hacking using SQL Injection Method and its Prevention: A tutorial-style paper explaining how to use inurl: commands to find targets and test them by adding a single quote (') to the URL. Common Related Dorks in Research
Researchers often expand their search using similar parameters to find broader vulnerability sets: inurl:article.php?ID= inurl:gallery.php?id= inurl:pageid=
long report: "inurl indexphpid" is not a standard document request, but rather a specific type of cyber security search query known as a Google Dork The search operator
instructs a search engine to find web pages that contain specific text within their URL. In this case, index.php?id=
is a highly common URL structure used by PHP-based websites to fetch specific database records (such as a specific article or product ID).
Below is a comprehensive report on why this specific string is significant in cyber security and website administration. 🛡️ Cyber Security Context: Why this string matters
In the field of ethical hacking and penetration testing, dorks like "inurl:index.php?id="
are used to map out attack surfaces. While finding a site with this URL does not mean it is broken, it signals to a tester that the site is actively pulling data based on user input. SQL Injection (SQLi) Vulnerabilities: If a website takes the number or text after
and passes it directly into a database query without sanitising it, an attacker can manipulate the query. This could allow them to steal database contents, bypass login screens, or modify site data. Reflected Cross-Site Scripting (XSS): If the input from the
parameter is printed back onto the webpage without proper encoding, malicious scripts can be executed in the victim's browser. Automated Scanner Targeting:
Malicious bots and automated vulnerability scanners frequently use this exact dork to compile massive lists of targets to probe for security holes. 💻 Web Development Context: How it works
For web developers, this string represents a basic method of dynamic content delivery. The File ( This is the main script file handling the request. The Parameter ( This is a 'GET' request parameter. For example, index.php?id=5
tells the server to look up the item associated with ID number 5 in the database. The Benefit:
It allows a site to use a single template file to display thousands of different pages, rather than making hard-coded HTML files for every single page. 🛑 Security Best Practices for Administrators If your website utilizes parameters like index.php?id=
, ensure you are protected against the vulnerabilities mentioned above: Use Prepared Statements:
When querying the database in PHP, always use PDO or MySQLi prepared statements (parameterised queries). This completely neutralises SQL injection by separating the query structure from the user data. Input Validation: Ensure that the input for
is strictly what you expect. If it should only be a number, force the variable to be an integer in your code before processing it. URL Rewriting: Use tools like Apache's mod_rewrite
to change dynamic URLs into clean, search-engine-friendly URLs (e.g., changing ://website.com ://website.com ://website.com
). This reduces the footprint visible to automated dork scanners. Deploy a WAF:
A Web Application Firewall (WAF) can detect and block automated scanners attempting to probe your URL parameters for vulnerabilities. SQL injection when using URL parameters, or are you researching specific defensive security tools
FingerLeakers/docker-inurlbr: Advanced search in search ... - GitHub
The search query inurl:index.php?id= is a classic footprint used in the context of web security and Google Dorking.
When you describe the results as "interesting text," you are likely seeing one of two things:
- Vulnerable Websites: This query finds URLs with parameters (like
id=123) that may be susceptible to SQL Injection (SQLi) attacks. Security researchers use this to find sites where the database might be exposed. - Google Dork Lists: You might be reading articles or "dork lists" that compile these queries. These lists are often written with "leetspeak" or stylized text to bypass filters, which can look unusual or "interesting."
A Word of Caution: While using these queries to read about security concepts is educational, attempting to access or manipulate databases you do not own is illegal (violating laws like the CFAA in the US or the Computer Misuse Act in the UK). Always practice ethical hacking on systems you have explicit permission to test, such as "Damn Vulnerable Web App" (DVWA) or similar labs.
The glowing cursor blinked on Elias’s screen, a steady heartbeat in the dark of his apartment. He wasn't a thief, but he was curious—a "digital detective" of sorts. He typed the string into the search bar like a skeleton key: inurl:index.php?id= inurl indexphpid
Thousands of results flooded the screen—forgotten local news sites, small-town bakeries, and obscure hobbyist forums. Each URL was a doorway into a database where information was fetched by a simple number.
He clicked on a link for a defunct museum's archive. The URL ended in . Elias reached for the single quote key (
)—the universal test for a leaky database. He appended it to the end: The page didn't just load; it broke.
“You have an error in your SQL syntax; check the manual...”
The website was whispering its secrets. Behind that error message was a map of the server’s brain. By manipulating the
parameter, Elias realized he wasn't just looking at the museum's public catalog anymore. He was peering into the employee logs, the private donations, and the "restricted" gallery. He saw a file named
. Unlike the others, it had no thumbnail. He navigated to it manually. The screen filled with high-resolution scans of documents dated 1944—records the museum had claimed were lost in a fire decades ago.
Elias realized the "Dork" hadn't just found a bug; it had found a lie. He didn't steal the data. Instead, he took a screenshot, opened his email, and began typing a report to the museum’s board. The digital detective had finished his work for the night. Proactive Follow-up: from these types of SQL injection vulnerabilities , or are you interested in other Google Dorks used for security auditing? SQL Injection Dorks To Find Vulnerable - MAYASEVEN
Title: The Double-Edged Sword of inurl:index.php?id= – A Deep Dive into SQLi, Discovery, and Defense
If you have spent any time in the world of bug bounty hunting, penetration testing, or even just casual web security browsing, you have likely come across the Google dork: inurl:index.php?id=.
At first glance, it looks like a random string of code and punctuation. To the uninitiated, it is just a search query. But to a security professional, it is a digital siren song—a signal that a web application might be vulnerable to one of the most critical and enduring flaws in web history: SQL Injection (SQLi) .
In this post, we are going to tear apart this dork. We will look at why it works, why it is so dangerous, how attackers exploit it, and most importantly—how developers can completely eliminate the risk.
5. Migrate to Modern Routing
Instead of using query strings like index.php?id=123, use URL rewriting (e.g., RewriteRule ^product/([0-9]+)$ index.php?id=$1). Modern frameworks (Laravel, Symfony, CodeIgniter) handle routing and parameter binding securely by default.
Part 6: The Ethical Conclusion
The inurl:index.php?id= dork is not a weapon. It is a signal. It points to places where trust might have been misplaced. For a defender, it is a checklist item. For a malicious actor, it is a hunting ground. For a security researcher, it is a classroom.
The internet is built on dynamic pages and databases. The id parameter isn’t going away. But the vulnerability around it can be completely eliminated by writing code defensively, using parameterized queries, and treating every user input—especially the innocent-looking id in the URL—as a potential threat.
So the next time you see inurl:index.php?id=, don’t just see a dork. See a lesson in web security history, still being written in real-time on servers around the world.
Stay curious, stay legal, and always sanitize your inputs.
Have you found interesting (or terrifying) things using this dork? Share your experiences in the comments below (on the original platform).
It looks like you’re searching for URLs containing inurl:index.php?id= — a common pattern for dynamic web pages with query parameters. This type of search is often used in:
- Security testing (looking for potential SQL injection or IDOR vulnerabilities)
- Information gathering (finding pages with numeric or string ID parameters)
However, performing such searches on live websites without permission is illegal and violates computer misuse laws (e.g., CFAA in the US, Computer Misuse Act in the UK). It can lead to criminal charges, fines, or imprisonment.
If you’re a security researcher or developer, here’s the proper way:
- Only test systems you own or have explicit written permission to test (e.g., via a bug bounty program).
- Use local environments or deliberately vulnerable applications (like DVWA, bWAPP, or HackTheBox) for learning.
- Follow responsible disclosure if you find a vulnerability in the wild — report it to the vendor, don’t exploit it.
If you meant something else — like help with a Google dork syntax or building a safe search pattern for a legitimate purpose — please clarify.
I notice you've asked for a story based on the search query "inurl indexphpid". This string appears to be a fragment of a URL-based search operator (commonly used in Google hacking or finding specific web pages), but it's incomplete or contains a typo—likely you meant something like inurl:index.php?id= (a classic pattern for detecting dynamic web pages with parameter passing, often associated with SQL injection vulnerabilities).
Since you asked for a solid story, I'll assume you're looking for a fictional narrative that incorporates the concept of finding hidden or vulnerable parts of a website using such a search query. I’ll craft a short suspense/tech-thriller story based on the corrected idea. If you intended something else, please clarify, and I’ll adjust.
Title: The Eighth Parameter
Logline: A junior cybersecurity analyst discovers a seemingly abandoned government portal using an old search trick—but what lies behind index.php?id= is watching back.
The glow of three monitors painted Maya’s face in pale blue. It was 2:17 AM. Another energy drink, emptied. Another routine vulnerability scan, completed.
Nothing.
She had been hired three months ago at Stratos Defense—a mid-tier cybersecurity firm with government contracts—because she had one skill that set her apart from the algorithmic grinders: she still used Google dorks.
Old-school search operators. The kind script kiddies used in 2010. The kind that still worked when no one was looking.
Tonight, she was bored. So she typed:
inurl:index.php?id= site:mil
The search returned 12 results. Most were honeypots—obvious decoys. But the eighth result was different.
https://decomm‑archive.mil/legacy/index.php?id=8
No robots.txt. No login wall. Just… a page. A white background. Black Courier text. A single line:
RECORD ID: 8 — ACCESS GRANTED — LOADING...
Maya frowned. The parameter id=8 should have returned a database entry. But nothing loaded. She tried id=7. Then 9. Then 1.
id=1 returned: RESTRICTED.
id=2 returned: RESTRICTED.
id=3 through 7: same.
But id=8 kept saying ACCESS GRANTED — LOADING... but never loading. The query inurl:index
She checked the page source. Nothing. Headers? A 200 OK but no content-length. Weird.
Then she tried something no automated scanner would think of.
id=8'
A single quote. The classic SQL injection test.
The page blinked. And then, for half a second, an error message appeared:
You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ''''' at line 1
Her pulse quickened. Vulnerable.
She opened sqlmap, but something stopped her. A feeling. Not paranoia—instinct.
She typed manually: id=8 AND 1=1 → ACCESS GRANTED — LOADING...
id=8 AND 1=2 → ACCESS DENIED.
Boolean blind. Someone built this. But why?
She reached for her phone to text her boss, but the screen flickered. All three monitors flickered.
Then a new message appeared on the decommissioned page—not in Courier, but in bold red Helvetica:
You are not cleared for id=8. Please remain at your workstation. A custodian has been dispatched.
Maya’s blood went cold. A custodian. That was internal slang at Stratos. That’s what they called the cleanup team.
She hadn’t told anyone what she was searching. No one knew she was here at 2 AM.
Except whoever—or whatever—was on the other side of index.php?id=8.
She closed the browser. Killed the VPN. Pulled the Ethernet cable.
But the message was already on her locked screen. Not a web page anymore. A system message.
We see you, Maya. id=8 sees all.
She turned. The office behind her was dark. But the red light on the ceiling security camera—normally blinking green—was steady red.
She ran for the stairwell, her sneakers silent on the industrial carpet. Behind her, the eighth monitor in the server room—the one that had been powered off for six years—booted by itself.
And on its screen, in green monospace:
LOADING id=8...
End.
If you meant something else by "inurl indexphpid" (e.g., an actual story about that exact search string as a meme or technical artifact), let me know and I’ll tailor a different version.
What Does inurl indexphpid Actually Mean?
To understand the power of this search string, we must break it down into its constituent parts.
Investigating "inurl:index.php?id" — a vivid exploration
What it is
- inurl:index.php?id is a search operator pattern people use to find URLs that include the query string index.php?id= (or similar). It targets pages where a PHP script accepts an id parameter in the URL.
Why people look for it
- Security research: Attackers and defenders both search for this pattern because pages using index.php?id= may be vulnerable to injection flaws (SQL injection, local file inclusion, etc.) if input isn’t properly validated.
- Content discovery: Researchers and archivists may use it to find parameter-driven content and site maps generated from database-driven sites.
- Reconnaissance: Pen-testers use it to enumerate potentially interesting endpoints that accept user-supplied IDs.
Technical risks and common vulnerabilities
- SQL injection: If id is concatenated into SQL without sanitization, attackers can manipulate queries to read or modify data.
- Local/Remote file inclusion: Poorly handled file paths derived from id can let attackers include arbitrary files.
- Cross-site scripting (XSS): Unsanitized id echoed into pages can enable reflected or stored XSS.
- Information leakage: Parameterized pages often reveal predictable IDs, facilitating data scraping or user enumeration.
How it’s typically used
- Search engines: Queries like inurl:"index.php?id=" or inurl:index.php?id site:example.com.
- Automated scanners: Tools crawl results to test for common vulnerabilities against the exposed parameter.
- Manual probing: Researchers append payloads (e.g., ' OR '1'='1) to test behavior and error messages.
Defensive guidance (brief)
- Input validation & parameterized queries: Use prepared statements and strict type checks.
- Least privilege DB users: Limit what injected queries could do.
- Output encoding: Prevent XSS by encoding before rendering.
- Avoid exposing raw IDs: Use opaque identifiers (UUIDs, hashes) and rate-limit ID enumeration.
- WAF and monitoring: Detect and block suspicious parameter payloads and scan activity.
Ethics and legality
- Searching for inurl:index.php?id across the web is not illegal by itself, but actively exploiting vulnerabilities without authorization is unlawful and unethical. Use findings only in authorized testing or defensive research.
A compact example payloads shortlist (for authorized testing only)
- SQL injection probe: index.php?id=1' OR '1'='1
- Basic LFI probe: index.php?id=../../
Understanding the "inurl:indexphpid" Keyword: A Comprehensive Guide
The keyword "inurl:indexphpid" has been a topic of interest among webmasters, SEO experts, and cybersecurity professionals for quite some time. This seemingly cryptic phrase is often associated with website vulnerabilities, search engine optimization (SEO) techniques, and potential security threats. In this article, we will delve into the world of "inurl:indexphpid," exploring its meaning, implications, and the various contexts in which it is used.
What does "inurl:indexphpid" mean?
The term "inurl" is a search operator used by Google and other search engines to search for a specific keyword within a URL. When combined with the phrase "indexphpid," it becomes a powerful tool for finding websites with a particular vulnerability or configuration.
In essence, "inurl:indexphpid" is a search query that looks for URLs containing the string "index.php?id=" or similar variations. This string is commonly used in PHP-based websites to pass parameters to the index.php file, which then processes the request.
Vulnerabilities associated with "inurl:indexphpid"
The "inurl:indexphpid" keyword is often linked to SQL injection vulnerabilities, a type of web application security vulnerability that allows attackers to inject malicious SQL code into a website's database. When an attacker finds a vulnerable website with an "index.php?id=" URL structure, they can potentially inject malicious SQL code to extract or modify sensitive data.
SQL injection attacks can have devastating consequences, including: Vulnerable Websites: This query finds URLs with parameters
- Data breaches: Attackers can extract sensitive data, such as user credentials, credit card numbers, or personal identifiable information.
- Data tampering: Malicious actors can modify or delete data, leading to website defacement, data loss, or corruption.
- System compromise: In some cases, SQL injection attacks can be used to gain unauthorized access to the underlying operating system or network.
SEO implications of "inurl:indexphpid"
While "inurl:indexphpid" is often associated with security vulnerabilities, it also has SEO implications. Webmasters and SEO experts use this keyword to identify websites with specific URL structures, which can be useful for:
- Competitor analysis: Analyzing competitors' websites with similar URL structures can provide insights into their website architecture and potential vulnerabilities.
- Link building: Finding websites with "index.php?id=" URLs can help identify potential link building opportunities or guest blogging prospects.
- Technical SEO audits: Identifying websites with vulnerable URL structures can help webmasters and SEO experts detect potential technical SEO issues.
How to protect your website from "inurl:indexphpid" vulnerabilities
To protect your website from potential SQL injection attacks and other vulnerabilities associated with the "inurl:indexphpid" keyword:
- Use prepared statements: When interacting with your database, use prepared statements to separate code from user input.
- Validate and sanitize user input: Ensure that user input is validated and sanitized to prevent malicious SQL code injection.
- Keep software up-to-date: Regularly update your PHP version, web framework, and database management system to ensure you have the latest security patches.
- Use a web application firewall (WAF): Consider implementing a WAF to detect and block suspicious traffic.
Conclusion
The "inurl:indexphpid" keyword is a complex topic that encompasses website vulnerabilities, SEO techniques, and cybersecurity threats. By understanding the implications of this keyword, webmasters, SEO experts, and cybersecurity professionals can better protect their websites and online assets from potential threats.
In conclusion, it is essential to:
- Be aware of the potential vulnerabilities associated with the "inurl:indexphpid" keyword
- Implement robust security measures to protect your website from SQL injection attacks and other threats
- Use SEO techniques to identify and analyze websites with similar URL structures
- Stay up-to-date with the latest security patches and software updates
By following these guidelines, you can ensure your website remains secure and optimized for search engines.
The search operator inurl:index.php?id= is a common "Google Dork" used to filter search results for specific types of dynamic websites. What is it?
inurl:: This command tells Google to search for a specific word or phrase within the actual URL of a webpage.
index.php?id=: This is a typical URL structure for websites built using PHP. It indicates that the site uses an index.php file to fetch specific content from a database using an ID parameter (e.g., index.php?id=123). Why is it used?
Technically, this query helps users find pages with dynamic content, but it is most frequently used in two specific contexts:
Cybersecurity & Ethical Hacking: Security researchers and "gray hat" hackers use this dork to identify websites that might be vulnerable to SQL Injection (SQLi). Because these URLs directly pass an "ID" to a database, they are often tested to see if they are properly sanitized.
SEO & Web Auditing: SEO specialists use it to find indexed pages on their own site or competitors' sites to check how dynamic content is being handled by search engine crawlers. Common Variations
You might see this paired with other terms to narrow down targets or research areas: inurl:index.php?id=1 (Common default ID) inurl:product-item.php?id= (Looking for e-commerce sites) inurl:newsDetail.php?id= (Targeting news or blog sites)
A Word of Caution: While using Google Dorks for research is legal, using them to identify and attempt to exploit vulnerabilities on websites you do not own is illegal and unethical.
The string inurl:index.php?id= is a common "Google Dork"—a search operator used to find websites that use the PHP scripting language
to dynamically display content from a database. This specific pattern indicates that the site uses a single file ( ) and a variable ( ) to determine which page or article to show.
Depending on your goal—whether it's web development, SEO, or security research—here is content broken down by category: 🛠️ Web Development & Technical Background
This URL structure is a classic method for building dynamic websites. : When a user visits index.php?id=123 , the PHP script uses the $_GET superglobal to grab the number
, queries a database (like MySQL), and displays the corresponding content. Simple Code Example : A developer might use a statement or a database query to include different files based on the ID. The Single-File Approach : Some developers build entire applications using only to keep things lightweight. 📈 SEO & "Pretty" URLs Modern web standards often view index.php?id= as an outdated or non-user-friendly format The Problem : Long URLs with many parameters can be difficult for search engines to crawl and less trustworthy for users to click. The Solution : Developers use Apache Mod_Rewrite file) to "prettify" these links, turning index.php?id=123 into something like /articles/title-of-post/ Duplicate Content
: If a site is accessible via both the raw ID URL and a "pretty" alias, it can lead to duplicate content issues in search rankings. 🛡️ Security Considerations
Using numeric IDs in URLs is not inherently dangerous, but it requires careful handling. SQL Injection parameter is not properly sanitized
, attackers can manipulate the URL to run malicious database commands. Validation : Best practice is to always check
that the ID is actually an integer before processing it in your script. tutorial on how to rewrite these URLs for better SEO, or are you looking for more advanced Google Dorking techniques?
I built an app using a single index.php file, here's how it went
To prepare content for a URL structured like index.php?id=, you typically need to create a dynamic PHP template that fetches and displays content from a database based on the specific "id" passed in the URL. 1. Retrieve the ID from the URL
In PHP, use the global $_GET variable to capture the ID being requested. It is critical to sanitize this input to prevent security risks like SQL Injection.
// Check if the 'id' parameter exists in the URL if (isset($_GET['id'])) // Sanitize the input (e.g., ensure it's an integer) $page_id = intval($_GET['id']); else // Set a default page ID if none is provided $page_id = 1; Use code with caution. Copied to clipboard 2. Fetch the associated content
Use the retrieved ID to query your database for the specific content—such as a title, body text, or image—linked to that identifier.
// Example using PDO to securely fetch data $stmt = $pdo->prepare("SELECT title, content FROM pages WHERE id = ?"); $stmt->execute([$page_id]); $page_data = $stmt->fetch(); Use code with caution. Copied to clipboard 3. Display the content in your template
Once you have the data, you can output it within your HTML structure. This allows one single index.php file to act as the template for every page on your site.
Part 1: What Does inurl:index.php?id= Actually Mean?
inurl:index.php?id= Actually Mean?
First, let’s decode the syntax. This is a Google “dork” (advanced search operator).
inurl: – This tells Google to only return results where the following string appears inside the URL.
index.php – This specifies a common default web page file, typically written in PHP.
id= – This is a URL parameter. It stands for “identifier” and is used to tell the web page which piece of content to fetch from a database.
What you are searching for: Every single publicly indexed webpage where the URL structure looks like https://example.com/index.php?id=123.
This pattern is the classic hallmark of a dynamic website. Unlike a static HTML page (e.g., about.html), an index.php?id=5 page pulls content from a database. The id=5 tells the database: “Go find the record with the number 5 and display it here.”
Why Is This a Security Concern?
On a well-secured website, index.php?id=123 is harmless. It might load a blog post, a product page, or a user profile. The danger arises when the web application fails to validate or sanitize the data passed through the id parameter.
Here is why this specific search string is a favorite among threat actors:
The Danger
If the website is vulnerable, an attacker could change the URL from this:
.../index.php?id=5
To this:
.../index.php?id=5' OR 1=1--
If the database executes this modified input, it could reveal hidden data, bypass authentication, or even drop tables. This is known as SQL Injection.