A start-up security company on Friday unveiled a beta of zero-day exploit protection software that it claims will protect users’ PCs until they can apply patches from the likes of Microsoft.

SocketShield, which can be downloaded free-of-charge from the Web site of Exploit Prevention Labs, is a signature-based monitor that detects and blocks vulnerability exploits, not the worm or or or Trojan horse payloads that traditional anti-virus software sniffs out.

Read more: New SocketShield Stops Zero-day Exploits