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Apr
26
awarded  Nice Answer
Apr
25
revised Should I be worried if I accidentally entered my password in a username field?
added 53 characters in body
Apr
20
revised Are services who offer to pay you a rent for your unused hard disk space a scam, and how do they work?
added legit possibilities
Apr
19
answered Are services who offer to pay you a rent for your unused hard disk space a scam, and how do they work?
Apr
15
comment Modifying shell code to bypass Windows Firewall
Your call to _system actually seems a relative address (+000001C5 is 401588 from 4013BE plus 5 byte instruction). Are you sure that the code will call the correct address once it's loaded in the destination buffer?
Apr
15
answered Can IP Security camera be tampered by flash of another camera?
Apr
7
revised Code injection using packet modification
added 245 characters in body
Apr
2
answered Code injection using packet modification
Mar
27
comment How could online encryption ever work?
The encryption you're thinking of is symmetric (the same key that encrypts will also decrypt). Briefly (and not too accurately): SSL uses asymmetric crypto: whatever is encrypted with one half of the key can only be decrypted by the other. I make one half public: everyone is able to send me data that anyone else can read, but I alone can decrypt. When communicating, we both generate a key and exchange its first "half". This process is slow but we only need it once. We use it to encrypt two symmetric, faster keys, which then don't travel in the clear. These keys protect the traffic.
Mar
26
comment Would turning a Diceware phrase into a sentence decrease its security?
Good point on the dangers of rejecting Diceware word sets for being difficult to weave into a sentence.
Mar
26
comment Can the ransomware encryption key be derived from comparing encrypted and unencrypted files?
Thanks @Kevin. I've added to my answer.
Mar
26
revised Can the ransomware encryption key be derived from comparing encrypted and unencrypted files?
added 93 characters in body
Mar
26
revised Can the ransomware encryption key be derived from comparing encrypted and unencrypted files?
added 93 characters in body
Mar
25
revised Can the ransomware encryption key be derived from comparing encrypted and unencrypted files?
added 1410 characters in body
Mar
25
awarded  Nice Answer
Mar
24
answered Can the ransomware encryption key be derived from comparing encrypted and unencrypted files?
Mar
15
comment Preditrend spam, how did they get my friend contact list?
Well then, that's pretty good evidence. Your friend's account or PC has either been compromised, or the contacts have been somehow exfiltrated (one possibility is an online backup on a compromised or even malicious server). Account compromise seems the most likely explanation to me, though.
Mar
15
answered Preditrend spam, how did they get my friend contact list?
Mar
13
revised How many hashes do I need to compute to get x collisions?
added 12 characters in body
Mar
13
answered How many hashes do I need to compute to get x collisions?