Sep 5, 2026
How to audit AI crawler traffic on your website
Build a crawler inventory from request logs. Separate claimed names, verified operators, resource use, and policy outcomes before changing crawler access.
Frederick Jahn
Understand the threats
Practical guides on AI crawlers, web scraping, and content protection.
AI crawlers and agents
Apr 20, 2026
How to control AI agent access
Build a practical access policy for AI crawlers and agents with a resource matrix, explicit identity states, bounded responses, and tested failure behavior.
Frederick Jahn
Apr 20, 2026
How to verify AI agents and spot spoofed crawlers
Check an AI crawler claim against the operator's published IP ranges, reverse DNS, or signed request, then decide what a verified client may reach.
Frederick Jahn
Apr 20, 2026
What is agentic traffic?
Agentic traffic is web activity created by software pursuing a user's goal, distinct from search crawlers, training crawlers, and query-time fetchers.
Frederick Jahn
Mar 18, 2026
GPTBot vs. ClaudeBot vs. Bytespider
Compare the published purpose, robots.txt guidance, and identity evidence for GPTBot, ClaudeBot, and Bytespider before writing an access policy.
Frederick Jahn
Mar 14, 2026
robots.txt for AI bots: a practical guide
Write, test, and monitor robots.txt rules for AI crawlers while keeping crawler preferences separate from identity and access control.
Frederick Jahn
Mar 12, 2026
How to block AI crawlers
Block AI crawlers with the control that matches your policy: robots.txt, verified network rules, rate limits, application enforcement, or challenges.
Frederick Jahn
Mar 10, 2026
What is an AI crawler?
An AI crawler is an automated client that collects web content for an AI system. Learn how it works and how major operators describe their crawlers.
Frederick Jahn
Browser automation
Sep 4, 2026
How to detect bots using residential proxies
A practical method for investigating automation behind residential IP addresses without treating a consumer network as proof of a person or a bot.
Frederick Jahn
Sep 4, 2026
What is an antidetect browser?
An antidetect browser changes the browser characteristics a site can observe. Learn how profiles work, which inconsistencies matter, and how to respond.
Frederick Jahn
Sep 3, 2026
What is Camoufox?
How the Firefox-based anti-detect browser changes fingerprints, where its own documentation sets limits, and how to assess its traffic.
Frederick Jahn
Sep 3, 2026
What is Kernel (kernel.sh)?
How Kernel supplies cloud browsers for agents and automation, how its stealth features work, and what a target website can evaluate.
Frederick Jahn
Sep 3, 2026
What is Playwright Stealth?
What the Python Playwright Stealth package changes, what it does not prove, and how to assess stealth-assisted browser automation.
Frederick Jahn
Sep 3, 2026
What is Ulixee Hero?
Ulixee Hero is a Chrome-based browser automation tool built for web scraping. See what its emulation covers and what Centinel observed in testing.
Frederick Jahn
Sep 3, 2026
What is Zyte?
How Zyte API retrieves, renders, and extracts web data, what its different request modes mean for target sites, and how to assess the traffic.
Frederick Jahn
Sep 2, 2026
What is Browser-use?
How Browser-use turns an LLM task into browser actions, where its traffic appears, and how to assess it without relying on one fingerprint.
Frederick Jahn
Sep 2, 2026
What is Browserbase?
How Browserbase runs cloud browsers for agents and automation, what a target website sees, and how to assess the resulting traffic.
Frederick Jahn
Sep 2, 2026
What is Firecrawl?
How Firecrawl turns web pages into data for software and AI agents, what target sites can observe, and where simple bot checks fall short.
Frederick Jahn
Apr 1, 2026
Interstitial challenge pages for protection
Decide when an interstitial challenge fits a protected route, which failure modes to handle, and how to measure the result before broad rollout.
Frederick Jahn
Mar 28, 2026
How to detect browser automation in six layers
navigator.webdriver is a disclosure, not a verdict. Layer identity, connection, browser, control, session, and history evidence, then test it in a lab.
Frederick Jahn
Mar 25, 2026
Patched Chromium browsers explained
Learn what patched Chromium means, which automation signals a patch can change, and how to test browser-automation detection without relying on one property.
Frederick Jahn
Mar 22, 2026
TLS fingerprinting: JA3, JA4, and their limits
How a ClientHello becomes a TLS fingerprint, where JA3 and JA4 differ, how to read both in Wireshark, and why neither settles a bot decision alone.
Frederick Jahn
Traffic protection
Sep 5, 2026
API rate limiting for bot protection
Choose API rate limits around client identity, route cost, bursts, and retries. Avoid one global rule that blocks users but misses expensive abuse.
Frederick Jahn
Sep 5, 2026
How to run a bot-protection proof of concept
Build a buyer-owned bot-protection evaluation with clear workflows, labeled traffic, and enforcement checks. Includes a practical scorecard.
Frederick Jahn
Sep 5, 2026
Bot traffic or traffic spike? How to tell
Compare traffic surges with request behavior, route cost, and real workflow completion. Avoid blocking a flash crowd or overlooking a bot-driven overload.
Frederick Jahn
Sep 5, 2026
CAPTCHA alternatives for your workflow
Compare non-interactive checks, proof of work, authentication, and workflow controls. Choose a CAPTCHA alternative by what it protects and how users recover.
Frederick Jahn
Sep 5, 2026
How to detect bot abuse on APIs
Investigate API automation using credentials, routes, resource use, and outcomes. Distinguish approved clients from abusive requests.
Frederick Jahn
Sep 5, 2026
How to detect automated account creation
Investigate signup bots through registration, verification, and first-use behavior. Separate automated misuse from legitimate bulk onboarding.
Frederick Jahn
Sep 5, 2026
How to detect cache-busting bots
Investigate query-string variation, falling cache hits, and rising origin work. Review cache keys safely without merging meaningfully different responses.
Frederick Jahn
Sep 5, 2026
Detect credential stuffing in login traffic
Investigate credential stuffing using login outcomes, account spread, and session activity. Separate automated attacks from ordinary failures.
Frederick Jahn
Sep 5, 2026
How to detect low-and-slow web scraping
Find scraping that stays under short rate limits by comparing resource coverage, account activity, and extraction over a longer window than a rate chart.
Frederick Jahn
Sep 5, 2026
How to fix CAPTCHA and bot-challenge loops
Trace repeated challenges through browser execution, token validation, cookies, and policy. Diagnose the failing transition without disabling protection.
Frederick Jahn
Sep 5, 2026
How to identify bot traffic in Google Analytics
Investigate suspicious GA4 traffic, check collection and filtering mistakes, and compare analytics patterns with request evidence before blocking clients.
Frederick Jahn
Sep 5, 2026
How to prevent account takeover
Protect login, password recovery, and account changes with layered controls. Learn where bot protection helps and which identity checks remain essential.
Frederick Jahn
Sep 5, 2026
How to prevent carding attacks at checkout
Reduce automated card testing with request controls, payment-provider protections, and safe retry handling. Includes an investigation checklist.
Frederick Jahn
Sep 5, 2026
How to prevent web scraping
Choose scraping controls by route: access checks, rate limits, crawler rules, and bot detection. Use a control matrix to test failures and roll back safely.
Frederick Jahn
Sep 5, 2026
How to investigate bot-detection false positives
Trace a legitimate user's block to the decision that caused it. Separate classification errors, policy mistakes, and integration failures.
Frederick Jahn
Sep 5, 2026
How to prevent account enumeration
Find account-existence leaks in login, signup, and password recovery. Review messages, status codes, and timing while keeping recovery usable.
Frederick Jahn
Sep 5, 2026
How to prevent authenticated scraping
Control automated extraction by signed-in users. Review account permissions, resource budgets, exports, and approved integrations.
Frederick Jahn
Sep 5, 2026
GraphQL rate limiting for expensive queries
Bound GraphQL query depth, breadth, pagination, and cost. Learn why HTTP request limits alone miss expensive operations.
Frederick Jahn
Sep 5, 2026
How to prevent OTP request abuse and SMS pumping
Control automated one-time-code requests before delivery. Review resend budgets, destination patterns, and outcomes without blocking legitimate recovery.
Frederick Jahn
Sep 5, 2026
How to prevent password-reset flooding and abuse
Protect recovery requests from automated flooding. Bound email delivery, retries, and token handling without letting attackers lock legitimate users out.
Frederick Jahn
Sep 5, 2026
How to prevent automated promo-code abuse
Protect promotion eligibility and redemption from bots. Review repeated claims, concurrent requests, and retry handling without relying on IP alone.
Frederick Jahn
Sep 5, 2026
Protect data-export endpoints from abuse
Review export permissions, queue admission, result delivery, and signed downloads. Bound automated bulk extraction without disrupting approved data exports.
Frederick Jahn
Sep 5, 2026
How to protect site search from bot abuse
Investigate automated search queries, deep pagination, and expensive filters. Set search-specific budgets while preserving useful search and autocomplete.
Frederick Jahn
Sep 5, 2026
How to respond to a layer 7 bot attack
Contain an application-layer bot flood by finding the exhausted resource, narrowing traffic controls, and checking recovery. Includes an incident worksheet.
Frederick Jahn
Sep 1, 2026
Centinel vs. Akamai
Looking for an Akamai Bot Manager alternative? Centinel detected 8 of 8 automated scraping tools in our September 2026 benchmark; Akamai detected 2 of 8.
Frederick Jahn
Sep 1, 2026
Centinel vs. Cloudflare
Looking for a Cloudflare Bot Management alternative? Centinel detected 8 of 8 scraping tools in our September 2026 benchmark; Cloudflare detected 3 of 8.
Frederick Jahn
Sep 1, 2026
Centinel vs. DataDome
DataDome alternative comparison: Centinel detected 8 of 8 automated scraping tools in our September 2026 benchmark against DataDome's 5 of 8.
Frederick Jahn
Sep 1, 2026
Centinel vs. Fastly
Looking for a Fastly Bot Management alternative? Centinel detected 8 of 8 automated scraping tools in our September 2026 benchmark; Fastly detected 0 of 8.
Frederick Jahn
Sep 1, 2026
Centinel vs. HUMAN Security
HUMAN Security (formerly White Ops) alternative: Centinel detected 8 of 8 scraping tools in our September 2026 benchmark; HUMAN Security detected 2 of 8.
Frederick Jahn
Sep 1, 2026
Centinel vs. Kasada
Kasada alternative comparison: Centinel detected 8 of 8 automated scraping tools in our September 2026 benchmark against Kasada's 3 of 8.
Frederick Jahn
Jul 22, 2026
Centinel vs. CDN and WAF bot protection
A practical method for deciding whether Centinel adds useful automation evidence to the CDN, WAF, and bot controls you already operate.
Frederick Jahn
Jul 22, 2026
Why WAF rules can miss browser-like crawlers
Learn where request rules end, where session evidence can help, and how to test the bot controls enabled in your WAF without relying on category claims.
Frederick Jahn
Mar 10, 2026
What is web scraping?
Understand how web scraping works, how it differs from crawling and browser automation, and how to build a resource-specific response.
Frederick Jahn