Earlier builds of v6.35 were vulnerable to the exploit. If you are playing on public multiplayer servers, ensure you are using at least v6.35.2 , which includes the critical security patch for this vulnerability.
Includes the iconic Window-based ClickGUI (Right CTRL) and the Navigator (Right Shift) for quick feature searches. How to Install Wurst v6.35 for MC 1.8 (OptiFine) Download Wurst v6.35 MC1.8 OFFile: Wurst-Client...
This version fixed critical rendering glitches where ChestESP and PlayerESP would break if you traveled too far from the world spawn. Earlier builds of v6