全スキル
CSP Content Security
⬢ ティア 2テクニカル
高い
給与インパクト
2か月
習得までの期間
普通
難易度
—
職種数
概要
Content Security Policy (CSP) is a browser security mechanism that controls resource loading and execution. Essential for modern web application security, preventing XSS, clickjacking, and injection attacks through strict header policies.
CSP Content Securityとは
Content Security Policy (CSP) is an HTTP security header that instructs browsers which resources (scripts, styles, images, fonts) are allowed to load and execute. It prevents malicious script injection and other content-based attacks by enforcing a whitelist of trusted sources. Job relevance: Web developers, security engineers, and DevOps professionals implementing CSP strengthen application security and compliance.
🔧 ツール＆エコシステム
CSP headersBrowser developer toolsSecurity violation reportingNonce and hash strategiesTesting tools (CSP evaluator)Server configuration (nginx, Apache)Web application frameworksTrusted Types APISubresource Integrity (SRI)CORS configuration
💰 地域別給与
| 地域 | ジュニア | ミドル | シニア |
|---|---|---|---|
| USA | $70k | $125k | $195k |
| UK | £55k | £100k | £160k |
| EU | €60k | €110k | €175k |
| CANADA | C$85k | C$150k | C$240k |
🎓 認定資格
Web Security certification (CEH, OSCP)
OWASP certification
Security+ certification
❓ よくある質問
What's the difference between CSP and X-Frame-Options?
CSP is comprehensive policy for all resources; X-Frame-Options only prevents clickjacking.
How do I test CSP?
Use browser console violations, CSP evaluator tools, or security scanners.
Does CSP affect performance?
Minimal impact; avoid strict policies on large sites; use nonces/hashes for inline scripts.
What's the best CSP policy?
Strictest possible for your application; start strict, relax only when necessary.
Can CSP break existing functionality?
Yes, if overly strict; test thoroughly; use reporting mode first.
How do I handle inline scripts?
Use nonces (preferred) or hashes; avoid inline if possible.
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