Valve Takes Legal Action Against Cheaters?

According to the site ‘HL2Fallout’ Valve Software are starting to take Legal action against cheating.

We’ve started taking legal action against cheating (cheat-sites, cheat creators,…) both in the US and abroad. This is in addition to the on-going investments in anti-cheating technology. You’ll see reports of this percolating up as various actions happens.

Source: HL2Fallout