Every website is a target. A personal blog, a portfolio, a small online store, and a large e-commerce platform all face automated attacks every day.
The scale keeps growing. AppTrana WAAP blocked over 10.54 billion malicious requests across more than 1,400 protected applications. Attacks per website rose 27% year over year, according to the State of Application Security 2026 report.
This guide is for website owners and security teams. It explains why attackers target websites, the most common ways websites get compromised, the warning signs, and the steps that reduce your risk.
Watch this short video for a quick overview, then read on for the details.
Why Do Hackers Target Websites?
Most attacks are automated. Bots scan the internet for known weaknesses and hit any site that has them. Size and industry matter less than exposure. AI tools now lower the skill needed to launch these attacks.
Financial Gain
Financial gain drives most breaches, according to Verizon’s Data Breach Investigations Report. Even small, local businesses hold something attackers can sell or use:
- Misusing data – Hackers could gain access to sensitive user data through phishing and social engineering attacks, malware, brute force attacks, and so on. Using the stolen data, they could engage in financial fraud, identity theft, impersonation, etc., to transfer money from the users’ bank accounts, apply for loans with the stolen credentials, file for federal benefits, create scams through fake social media accounts, and so on.
- Selling data on the dark web – Data is the new oil, and hackers stand to make massive amounts of money by selling user/ business data on the dark web. Cybercriminals purchase and leverage stolen data to orchestrate scams, identity thefts, financial fraud, etc. Scammers purchase such data to craft personalized phishing messages or highly targeted ad fraud.When personal or credit details end up on these illicit marketplaces, understanding how to freeze credit helps prevent unauthorized individuals from opening accounts in your name.
- SEO Spam – Spamdexing or SEO Spam is a highly profitable method used by hackers to reduce the SEO rankings of a website and reroute legitimate users to spam websites. This is done by injecting backlinks and spam into the user input fields on the website. By redirecting users to spam websites, the hackers could steal data, gain access to credit card information through illegitimate purchases, etc. For Google-specific monitoring, a Google SERP API can be used to track compromised URLs, injected spam pages, and unexpected ranking changes connected to a hacked website.
- Spreading Malware – Hackers often hack websites to spread malware, including spyware and ransomware, to website visitors. They could be spreading malware for their own benefit (blackmail companies to pay a ransom, selling patented information, etc.) or for other cybercriminals, competitors, or even nation-states. In either case, they make large sums of money.
Disruption of Service
Some attackers want your site offline. DDoS attacks flood a site with traffic until real users can’t reach it. Attackers also use DDoS as a smokescreen while they steal data or plant malware.
Corporate Espionage
Competitors or their agents may target a website to steal trade secrets, pricing data, or customer lists. A leak or outage can also damage a rival’s reputation.
Hacktivism
Some attackers act on social, political, or religious motives. They deface websites, leak data, or launch DDoS attacks to make a point.
State-Sponsored Attacks
Nation-state groups target websites for espionage, disruption, and influence operations. Government, defense, financial, and critical infrastructure sites face the highest risk.
Personal Reasons
Hackers could also engage in hacking for their own amusement, personal revenge, just proving a point, or plain boredom.
How Do Websites Get Hacked?
Most website breaches trace back to a small set of weaknesses. Each one below includes the steps that reduce your exposure.
1. AI-Assisted Attacks and AI Features
AI now affects website security in two ways.
AI speeds up attackers – AI tools help attackers find and exploit known flaws faster. The gap between a vulnerability’s disclosure and its first attacks keeps shrinking. In 2026, attackers exploited a critical flaw in Langflow within 20 hours of disclosure. A LiteLLM flaw was exploited within 36 hours.
AI features add new attack surface – Chatbots, AI search, and LLM-connected APIs accept free-form input. Attackers can write input that overrides the AI’s instructions. This is called prompt injection. In 2023, a car dealership’s website chatbot agreed to sell a $1 Chevy Tahoe after a user rewrote its instructions. Self-hosted AI servers and gateways left open on the internet are another entry point.
AI crawlers add load too. Their request volumes can strain a site with no rate limits.
Reduce the risk: Treat every input to an AI feature as untrusted. Give chatbots and AI agents only the data and actions they need. Require human approval for sensitive actions. Patch AI tools and frameworks as soon as fixes ship. Rate-limit and identify AI crawler traffic. See the OWASP Top 10 for LLM Applications for the full list of AI risks.
2. Weak Access Controls and Stolen Credentials
Access control decides who can reach your website, admin panel, hosting account, and data, and what each user can do. Attackers target weak logins with brute force attacks, credential stuffing, and phishing.
Websites face higher risk when they:
- Have no clear policy for granting and reviewing user privileges
- Allow weak or reused passwords
- Skip multi-factor authentication (MFA)
- Keep accounts active after employees or contractors leave
- Allow unencrypted HTTP connections
Reduce the risk: Enforce MFA for every admin account. Grant the least privilege each role needs. Remove access the day someone leaves. Limit login attempts to slow automated guessing. Learn more about broken access control.
3. Outdated or Vulnerable Components
Modern websites run on open-source frameworks, plugins, themes, and libraries. They speed up development. They also carry known vulnerabilities. Some components get abandoned and never receive another patch.
Attackers scan for outdated versions with publicly known flaws. Disabled plugins left on the server are a common gap. They still hold exploitable code.
The patching gap is wide. 32% of critical vulnerabilities stayed open beyond 180 days, according to the State of Application Security 2026 report.
Reduce the risk: Keep an inventory of every component you run. Update on a fixed schedule. Delete unused plugins and themes completely. Replace components that are no longer maintained.
4. Server and Configuration Weaknesses
A misconfigured server can expose more than its owner realizes. Common gaps include default credentials, exposed admin panels, unnecessary open services, and error messages that reveal system details.
Attackers use automated tools to find these gaps across thousands of sites at once.
Reduce the risk: Change default credentials. Restrict admin panels by IP or VPN. Close services you don’t use. Show generic error messages to users. Review configurations after every change. See how security misconfigurations are detected.
5. Application Vulnerabilities
Vulnerabilities in your own application code are a major entry point:
- Injection: SQL injection and similar vulnerabilities let attackers send commands to your database or server through user input.
- Cross-site scripting (XSS): XSS lets attackers run malicious scripts in your visitors’ browsers.
- Cross-site request forgery (CSRF): CSRF tricks a logged-in user’s browser into taking unwanted actions.
- Business logic flaws: Business logic flaws abuse how a workflow is designed, such as skipping a payment step or reusing a discount code.
Reduce the risk: Validate input on the server side. Use parameterized queries. Encode output. Use anti-CSRF tokens. Test business workflows the way an attacker would misuse them.
6. API Weaknesses
Most websites rely on APIs to talk to backend systems and mobile apps. APIs often expose more data and functions than the website itself. API exploitation rose 181% in 2025, accelerated by LLM-assisted attack tooling, according to the State of Application Security 2026 report.
Common API weaknesses include:
- Weak authentication and poorly protected tokens
- Broken object-level authorization, where one user can access another user’s records
- Excessive data exposure in API responses
- Missing rate limits
- Error messages that reveal internal details
Reduce the risk: Keep an inventory of every API, including old versions. Enforce authorization on every request. Return only the data each client needs. Apply rate limits. Learn more about the OWASP API Top 10.
7. Third-Party Scripts and Client-Side Attacks
Websites load scripts from analytics, chat, payment, and ad providers. If one of those scripts is compromised, every page that loads it is compromised too. Card-skimming attacks often work this way. In 2018, attackers injected a skimming script into British Airways’ website and payment pages. The UK’s ICO later fined the airline £20 million.
Reduce the risk: Keep a list of every third-party script. Remove the ones you don’t need. Use a Content Security Policy and Subresource Integrity checks. Monitor payment pages for script changes.
8. Poorly Isolated Shared Hosting
Shared hosting places many websites on the same server. Good providers isolate each account. Weak isolation lets an attacker who compromises one site reach others on the same server.
Reduce the risk: Choose a host with strong account isolation and a clear security track record. Move business-critical sites to isolated or managed environments.
9. Bots and Automated Attacks
Bots run most attack traffic. They test stolen credentials, scrape content and prices, hoard inventory, and probe for vulnerabilities. 90% of websites faced at least one bot attack in 2025, according to the State of Application Security 2026 report.
Reduce the risk: Use bot detection that looks at behavior. Rate-limit logins, search, and checkout. Monitor traffic for sudden spikes from new sources.
Signs Your Website May Be Hacked
A breach can damage your reputation, cost you customers, and bring legal consequences. Catching it early limits the damage. Watch for these signs:
- Visitors get redirected to unfamiliar sites
- New admin users, files, or pages you didn’t create
- Spam links or foreign-language pages in your search results
- Browser or search engine warnings that your site is unsafe
- Sudden traffic spikes or slowdowns
- Defaced pages or changed content
- Unexpected outbound emails from your domain
If you see these signs, follow this guide on how to fix a hacked website.
How to Protect a Website from Hackers
Scan Continuously
New vulnerabilities are disclosed every day. Developers can’t track them all on top of their regular work. Continuous scanning checks your site for known flaws, zero-day vulnerabilities, and misconfigurations as they appear. Each finding goes to your developers with clear fix guidance.
Get Penetration Testing After Major Changes
Scanners find known vulnerabilities. Business logic vulnerabilities, such as broken access control and multi-step workflow abuse, need deeper testing. Penetration testing finds them by probing how your application should work and how it can be misused.
AI-assisted pentesting extends that work. AI models map your web and API endpoints, including undocumented ones. When they confirm a flaw, they retest it everywhere the same logic repeats. Certified pentesters then validate high-impact findings. The result covers more of your application than a fixed-hours manual engagement. Learn how AI-assisted pentesting works for web, API, and AI apps.
Schedule a pentest after every major release or architecture change. AI-assisted testing can also make more frequent testing practical.
Close the Gap Between Vulnerability Finding and Patching
Fixing a vulnerability takes time. Developers juggle releases, wait on third-party patches, and work with changing code.
Meanwhile, attackers use AI-assisted tools to scan for vulnerable sites at scale. They can start exploiting a new flaw within hours of its disclosure. The State of Application Security 2026 report recorded 6,235 zero-days in 2025, 2.5 times more than the year before. Every open vulnerability is now easier for attackers to find.
A web application firewall (WAF) can block exploit attempts against a known vulnerability while the fix is in progress. This is called virtual patching.
Build Security Into Your CI/CD Pipeline
Add security scanning to your build and release pipeline. Developers see vulnerabilities in staging before they reach production. Findings also show which coding patterns keep causing problems. Read more about the role of WAAP platforms in the CI/CD pipeline.
Prepare for DDoS Attacks
Application-layer DDoS attacks are hard to separate from real traffic. Use a DDoS protection service with enough capacity to absorb large attacks. Set rate limits at the network, server, and application layers. Monitor traffic so you spot an attack in its first minutes.
Manage Bots and Spam
CAPTCHAs help separate humans from simple bots on forms. Advanced bots can solve them. Behavioral bot detection catches more of them. Block confirmed malicious sources quickly.
Keep Backups and an Incident Plan
Keep regular, tested backups stored away from your web server. Write down who does what during an incident. A clear plan shortens recovery time.
For a full checklist, see these 7 habits to secure your website.
How AppTrana Protects Your Website
AppTrana WAAP protects web applications, APIs, and AI systems on one platform. It combines a web application firewall, API security, DDoS protection, bot mitigation, and vulnerability scanning. Its AI Firewall helps defend AI features against threats like prompt injection. Vulnerabilities found by scanning are virtually patched at the edge while your developers work on the fix. SwyftComply AI, a feature within AppTrana, autonomously closes the vulnerabilities it finds at the edge. Autonomous protection and expert-backed operations built in keep coverage current as new threats appear.
Start a free trial and see how AppTrana protects your website.
Already dealing with a compromised site? Learn how to clean, recover, and secure a hacked website using a structured recovery plan
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