Luke Sheppard's blog about information security, web development, and hacking 

Home Blog Security Archive for category "Hacking"

SHA1 Hashes of Very Large Files

SHA-1 has been widely disparaged for security reasons, but it is just fine for checking file integrity. But like all things in computer science, when the files get really large

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Security Through Obscurity Is Widely Misunderstood

Pretty much any experienced hacker you talk to, whether an actual crook or a professional IT security researcher, will tell you that “Security Through Obscurity” is useless—at best a waste

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SQL Queries for Plaintext Passwords

  If you find yourself in a database that stores passwords in plaintext, this handful of SQL queries might help you get a picture of how weak the passwords are

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Password key space complexity versus password length

It is weird to think that a 7 character all lowercase password is better than a 5 character alphanumeric with punctuation: 95^5 = 7,737,809,375 26^7 = 8,031,810,176 The seven character

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