ISAB Engineering Team Takes Action to Block Suspicious User-Agents

The ISAB Engineering Team has blocked several suspicious user-agents to provide a secure experience for users and protect their website from DDoS attacks. The latest blocked user-agents include Apache-HttpClient, Go-http-client, HeadlessChrome, LinkScan, Mechanize, Sucker, and Windows NT 6.1; WOW64; Trident/7.0; rv:11.0, which are commonly used by automated crawlers, bots, or spiders. The team recommends using the latest browsers for the best security and performance and those with a legitimate use case for automated tools can contact the team for permission. The team will continue to take necessary actions to ensure a secure experience for users.

The ISAB Engineering Team is committed to providing a safe and secure experience for all of our users. As part of this commitment, we have recently taken action to block a number of suspicious user-agents that are likely being used for DDoS attacks rather than by human visitors.

In our previous announcement, we highlighted a number of user-agents that had been blocked, including Android 4.1.1, Chrome/14.0, and Opera/9.80. We apologize to those using outdated devices or browsers, but according to our WAF log, the proportion of legacy device users is fairly low.

Today, we are announcing that we have blocked additional suspicious user-agents, including Apache-HttpClient, Go-http-client, HeadlessChrome, LinkScan, Mechanize, Sucker, and Windows NT 6.1; WOW64; Trident/7.0; rv:11.0. These user-agents are commonly used by automated crawlers, bots, or spiders and their use is forbidden without written permission per ISAB's terms of service.

We recommend that all of our users use the latest browsers for the best security and performance. If you believe that your use case for an automated tool is legitimate, please contact [email protected], [email protected], or [email protected] for permission to use such tools.

ISAB Engineering Team will continue to take necessary actions to protect our website from malicious attacks and to provide a safe and secure experience for all of our users.