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You need to block specific substrings of a URL (e.g., youtube.com/watch?v=... but not the homepage). You need a free solution for a tiny office.
As the sole IT manager for a hybrid workforce of 150 employees, I was losing sleep over two things: users clicking malicious links at home, and students/employees bypassing our on-premise web filter using VPNs or personal hotspots. umbrella content filtering
We previously used a major antivirus vendor's web filter. Umbrella blocks malicious domains (malware, phishing, C2 callbacks) noticeably faster. It blocks newly registered domains (NRDs) that often host zero-day attacks before signature updates even exist. You need to block specific substrings of a URL (e