David A. Wheeler’s Page on Fully Countering Trusting Trust through Diverse Double-Compiling (DDC) - Countering Trojan Horse attacks on Compilers Here’s information about my work to counter the “Trusting Trust” attack. The “Trusting Trust” attack is an incredibly nasty attack in computer security; up to now it’s been presumed to be the essential uncounterable attack. I’ve worried about it for a long time, essentially since Ken Thompson publicly described it. After all, if there’s a known attack t...