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Adam Katz
  • Member for 8 years, 4 months
  • Last seen this week
1266 votes
22 answers
275k views

XKCD #936: Short complex password, or long dictionary passphrase?

  • 2,688
499 votes
8 answers
496k views

RSA vs. DSA for SSH authentication keys

  • 13k
465 votes
13 answers
104k views

Are passwords stored in memory safe?

236 votes
10 answers
89k views

Is "the oft-cited XKCD scheme [...] no longer good advice"?

  • 3,372
184 votes
4 answers
210k views

SSH key-type, rsa, dsa, ecdsa, are there easy answers for which to choose when?

  • 2,470
171 votes
10 answers
42k views

Should I be concerned if the "FBI" has logged onto my Ubuntu VPS?

125 votes
5 answers
185k views

Is it a bad idea for a firewall to block ICMP?

120 votes
11 answers
25k views

Password rules: Should I disallow "leetspeak" dictionary passwords like XKCD's Tr0ub4dor&3

  • 1,583
113 votes
2 answers
82k views

SSH Key: Ed25519 vs RSA

  • 2,946
102 votes
10 answers
20k views

Unsubscribe safely

  • 1,153
79 votes
6 answers
72k views

How does PGP differ from S/MIME?

43 votes
5 answers
27k views

Confused about (password) entropy

  • 533
43 votes
4 answers
8k views

How can you change "system fonts" in Firefox (to increase own safety & privacy)?

  • 533
37 votes
1 answer
4k views

How did FBI/DoJ retrieve the data stored on the encrypted iPhone?

35 votes
3 answers
23k views

How are spammers using LinkedIn "http://linkedin.com/slink?code=..." URLs?

  • 451
35 votes
5 answers
189k views

Getting spam calls from numbers similar to my own

31 votes
5 answers
71k views

Is WebGL a security concern?

31 votes
2 answers
13k views

What information is leaked from an OpenPGP encrypted file?

  • 1,230
27 votes
3 answers
5k views

How does Bayesian poisoning work?

26 votes
3 answers
15k views

ECC in (Open)PGP

  • 629
25 votes
5 answers
2k views

What concrete parameters can I change to make my passphrase-protected private gpg key more secure

21 votes
4 answers
3k views

Would 'spam' mail really avoid eavesdropping?

  • 1,455
18 votes
5 answers
5k views

Hashcash, is this really used?

  • 321
18 votes
1 answer
4k views

How does Firefox's "first-party isolation" feature function?

  • 1,303
17 votes
1 answer
10k views

What fuzzy hashing algorithms exist?

  • 646
15 votes
6 answers
3k views

Does phishing include ransomware?

13 votes
3 answers
812 views

What are common/official methods of reporting spam/phishing/nasty-grams to organizations?

10 votes
4 answers
15k views

Is a safelinks.protection.outlook.com link phishing?

9 votes
3 answers
317 views

Is there a benefit to using a different email for every online account?

  • 91
9 votes
0 answers
671 views

Has anyone had a look at DIME, the new Darkmail infrastructure, yet? [closed]

  • 199