This question is too broad for Stack Overflow. You might have better luck on a site like Software Engineering or Information Security. Please read their Help Center first, before asking, to make sure that your question is on-topic. — Cody Gray ♦ 13 secs ago

I recommend giving these questions more representative titles. Not only will it make the question easier to find for future programmers with a similar question, but it will also attract a better pool of eyes to actually answer the question. — user4581301 13 secs ago