Stages of Open Source: Run opensource so you can pour through the code and trust that it is secure by finding the issues in the code. Benefit from the masses

Stages of Open Source: Run opensource so you can pour through the code and trust that it is secure by finding the issues in the code. Benefit from the masses of users also pouring through the code to make sure it is safe. Gain critical mass such that no security flaw goes undiscovered. Grow complacent and assume all the other users are checking so you don't have. Gain a large enough install base that malicious contributors add back doors and other nastiness to the code base. Have a bad thing happen. Snap out of complacency and start taking security seriously again.