From Reddit saved post — r/netsec, u/tohitsugu, Aug 13 2026 https://www.reddit.com/r/netsec/comments/1vnmye4/when_you_pay_the_ransom_taking_apart_an_interlock/

From Reddit saved post — r/netsec, u/nns_ee, Jun 03 2026 https://www.reddit.com/r/netsec/comments/1tvlsan/hacking_your_pc_using_your_speaker_without_ever/

From Reddit saved post — r/netsec, u/CyberMasterV, Jul 17 2022 https://www.reddit.com/r/netsec/comments/w14fsr/build_your_first_llvm_obfuscator/

From Reddit saved post — r/netsec, u/illusionofchaos, Sep 23 2021 https://www.reddit.com/r/netsec/comments/pu7se4/disclosure_of_three_0day_ios_vulnerabilities_and/

From Reddit saved post — r/netsec, u/SerenityOS, Jan 29 2020 https://www.reddit.com/r/netsec/comments/evinrg/i_was_asked_to_crosspost_this_here_im_an_os/

From Reddit saved comment — r/netsec, u/marcan42, Feb 02 2017 https://www.reddit.com/r/netsec/comments/5ri5mo/how_to_hack_the_upcoming_dutch_elections_and_how/dd89nmc/ Comment on: How to hack the upcoming Dutch elections – and how hackers could have hacked all Dutch elections since 2009 > When you encrypt a file, and only the authorized personnel has the key to decrypt and re-encrypt, that does stop people from editing a file if they don't have the key. How else are you going to do authentication on an XML file? No, it doesn't. You're a software developer, and you're writing election software. You decide to encrypt the results for maximum security. You choose AES-128-CTR with a salted passphrase, which is a secure encryption algorithm. Here's your results XML file: <state code="CA"> <total cand="Clinton">8753788</total> <total cand="Trump">4483810</total> </state> Encrypt it: openssl enc -aes-128-ctr -k "s3cr3tp4ssw0rd" -in votes.xml -out votes.xml.bin And here is the encrypted result, which is of course *totally* secure and nobody would ever be able to tamper with it: $ hexdump -vC votes.xml.bin 00000000 53 61 6c 74 65 64 5f 5f 7d 58 a7 90 ce 4c a7 66 |Salted__}X...L.f| 00000010 4c 51 91 8c a0 d1 57 f8 6b dc 9d b5 42 a7 28 20 |LQ....W.k...B.( | 00000020 d4 32 f5 92 c1 f9 aa a5 3b bc 15 a5 47 74 e2 5e |.2......;...Gt.^| 00000030 d5 84 1c 9d ad 14 c2 ae 67 03 20 4f f8 fa 39 f1 |........g. O..9.| 00000040 32 94 ba 0c 28 b7 1a cb 88 5b 72 5c 19 bb 5e 08 |2...(....[r\..^.| 00000050 ca da 90 34 6f b9 3d 5d 10 fa cb 90 ea 73 06 5c |...4o.=].....s.\| 00000060 9c 05 09 2e cf 68 e0 7c 6b 33 f2 02 e6 2f 8c fc |.....h.|k3.../..| 00000070 c1 4c bb 27 42 c8 9b |.L.'B..| 00000077 Now Putin comes along, without knowing the passphrase, and flips four bits (see if you can spot them!): 00000000 53 61 6c 74 65 64 5f 5f 7d 58 a7 90 ce 4c a7 66 |Salted__}X...L.f| 00000010 4c 51 91 8c a0 d1 57 f8 6b dc 9d b5 42 a7 28 20 |LQ....W.k...B.( | 00000020 d4 32 f5 92 c1 f9 aa a5 3b bc 15 a5 47 74 e2 5e |.2......;...Gt.^| 00000030 d5 84 1c 9d ad 14 c2 ae 67 0f 20 4f f8 fa 39 f1 |........g. O..9.| 00000040 32 94 ba 0c 28 b7 1a cb 88 5b 72 5c 19 bb 5e 08 |2...(....[r\..^.| 00000050 ca da 90 34 6f b9 3d 5d 10 fa cb 90 ea 73 0a 5c |...4o.=].....s.\| 00000060 9c 05 09 2e cf 68 e0 7c 6b 33 f2 02 e6 2f 8c fc |.....h.|k3.../..| 00000070 c1 4c bb 27 42 c8 9b |.L.'B..| 00000077 And the election officials use your software to access the election results: openssl enc -d -aes-128-ctr -k "s3cr3tp4ssw0rd" -in votes.xml.bin -out votes.xml And look at what they get: <state code="CA"> <total cand="Clinton">4753788</total> <total cand="Trump">8483810</total> </state> Now Trump won California, and it's all your fault. Good job. Try a hash, a MAC, or a signature next time. $ sha1sum votes.xml.bin b6a95430bf363d8217e0af1b6daa5824d603e7ba votes.xml.bin vs. $ sha1sum votes.xml.bin cfde07d5105db75ad0c2692f221d3830fe6ba9b0 votes.xml.bin