When a website with poor input sanitization submits the form’s content to its server, the hacker’s code executes. Instead of filling out these forms with standard answers and content, hackers using SQL injection take another path - they’ll enter a string of SQL code.
Without strong input sanitization, a fillable form or comment box is a glaring SQL injection vulnerability. The same goes for a comment section or user reviews. If you’ve ordered something online and filled in your address, that counts. Tons of websites collect user input and pass it on to the server. SQL injection via user input is the simplest way to conduct SQL injection attacks.
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Here’s how to SQL inject - don’t try this at home! SQL injection via user input Hackers use SQL injection attacks to get inside a website’s database.
Once the hacker’s payload reaches the website’s database on its server, it springs into action and affects the database to fulfil the hacker’s goals. Then, the website delivers the hacker’s code - the payload - to its server. If a website isn’t thoroughly sanitizing inputs, a hacker can inject their own SQL code. People buying this stolen information often do so to commit identity theft and fraud. They can then use this data to perform actions on behalf of the affected users, or compile their compromised logins into a larger list to sell to other cybercriminals on the dark web. Once the hacker has database control, it’s easy for them to mess with people’s account balances and funnel money into their own account.īut often, the cybercriminal is after the website’s stored user data, such as login credentials. They may simply hope to cause havoc by deleting data, or they may seek to edit the database, especially if financial websites are targeted. That requires more work from the developer, but ultimately protects against SQL injection, cross-site scripting, and other types of website attacks. SQL injection attacks are possible only when a website lacks sufficient input sanitization - the process of ensuring that any end-user input cannot slip through the cracks and function as executable code on the server side. The hacker inputs, or injects, malicious SQL code - a form of malware known as the payload - on the website and fools it into delivering that code to its database as a legitimate query. This is how SQL injections (or SQLI) happen. If a web developer isn’t careful, they might build their site in such a way that a malicious actor can cause unintended effects in its database. So, where does the injection part come in? You can’t simply copy and paste one database’s SQL onto another, because those databases may have been built in two completely different ways. Most designers create databases with their own unique set of SQL rules to best suit their particular needs. SQL is a broad and flexible language that gives database designers a ton of possibilities.
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What is SQL Injection? | Explanation & Protection | Avast Logo Ameba Icon Security Icon Security White Icon Privacy Icon Performance Icon Privacy Icon Security Icon Performance Icons/45/01 Security/Other-Threats Icons / 32 / Bloatware removal Icons / 32 / Registry Cleaner Icons / 32 / CleanUp Icons / Feature / 32 / Mac Icons / 32 / Browser cleanup Icons/32/01 Security/Malware Icons/32/01 Security/Viruses Icons/32/01 Security/Other-Threats Icons/32/01 Security/Passwords Icons/32/01 Security/Ransomware Icons/32/01 Security/Business Icons/32/02 Privacy/Browser Icons/32/02 Privacy/IP adress Icons/32/02 Privacy/VPN Icons/32/02 Privacy/Proxy Icons/32/02 Privacy/Streaming Icons/32/03 Performance/Celaning Icons/32/03 Performance/Drivers Icons/32/03 Performance/Gaming Icons/32/03 Performance/Hardware Icons/32/03 Performance/Speed Icons / 32 / Bloatware removal Icons / 32 / Registry Cleaner Win Icons / 32 / CleanUp Icons / Feature / 32 / Mac Icons / 32 / Browser cleanup Icons/60/02 Privacy/02_Privacy Icons/60/01 Security/01_Security Icons/60/03 Performance/03_Performance Icons/80/01 Security/IoT Icons/80/01 Security/Malware Icons/80/01 Security/Passwords Icons/80/01 Security/Ransomware Icons/80/01 Security/Viruses Icons/80/01 Security/Other-Threats Icons/80/03 Security/Business Icons/80/02 Privacy/Browser Icons/80/02 Privacy/IP adress Icons/80/02 Privacy/VPN Icons/80/02 Privacy/Proxy Icons/80/02 Privacy/Streaming Icons/80/03 Performance/Celaning Icons/80/03 Performance/Drivers Icons/80/03 Performance/Gaming Icons/80/03 Performance/Hardware Icons/80/03 Performance/Speed Icons/80/03 Performance/03_Performance Icons/80/02 Privacy/02_Privacy
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