The Krunker version history notes that v5.7.3 was a maintenance update designed to address game security and performance:
: Users are frequently warned on Reddit that downloading "hack" software often results in browser hijacking or malware that steals account cookies and passwords. versions.txt - Krunker Krunker.io Hacks & Cheats 5.7.3
: Because Krunker is a browser-based game written in JavaScript, it is highly susceptible to script injection. The Krunker version history notes that v5
: Patched vulnerabilities on the Sandstorm map. Krunker.io Hacks & Cheats 5.7.3