Cryptography & Security Newsletter
Newsletter Archive
Feisty Duck’s Cryptography & Security Newsletter is a periodic dispatch bringing you commentary and news surrounding cryptography, security, privacy, SSL/TLS, and PKI. It's designed to keep you informed about the latest developments in this space. Enjoyed every month by more than 50,000 subscribers. Written by Ivan Ristić.
2025
- #126 Internet PKI to Integrate DNSSEC 30 Jun 2025
- #125 Passkeys Gain Momentum 29 May 2025
- #124 Certificate Lifetimes to Shrink to Just Forty-Seven Days 30 Apr 2025
- #123 Mozilla Fixes Certificate Revocation Checking 31 Mar 2025
- #122 QWAC Technical Details Emerge 28 Feb 2025
- #121 The Slow Death of OCSP 30 Jan 2025
- #120 Short-Lived Certificates Are Coming in 2025 31 Dec 2024
- #119 NIST Publishes Roadmap for Post-Quantum Transition 28 Nov 2024
- #118 Apple Wants to Limit Certificates to Forty-Five Days 31 Oct 2024
- #117 Smart TVs Are Watching You 26 Sep 2024
- #116 Post-Quantum Cryptography Arrives 29 Aug 2024
- #115 RADIUS/UDP Considered Harmful 30 July 2024
- #114 Entrust in Trouble 27 Jun 2024
- #113 EU Clings to the Pervasive Surveillance Dream 30 May 2024
- #112 Facebook Used MITM to Spy on Competition 30 Apr 2024
- #111 European Union Starts to Confront Digital Platforms’ Dominance 28 Mar 2024
- #110 Apple’s New Messaging Protocol Raises the Bar for Post-Quantum Security 29 Feb 2024
- #109 CA/Browser Forum Adopts CAA for S/MIME Certificates 31 Jan 2024
- #108 SSH Protocol Vulnerable to MITM Attack 29 Dec 2023
- #107 European Union Presses Ahead with Article 45 30 Nov 2023
- #106 Encrypted Client Hello and the Last Network Privacy Gap 31 Oct 2023
- #105 Microsoft’s Compromised Private Key 27 Sep 2023
- #104 VPNs Still Don’t Work 30 Aug 2023
- #103 RFC 9420: Messaging Layer Security 27 Jul 2023
- #102 Four CA Stories: The Good (Times Two), the Bad, and the Ugly 29 Jun 2023
- #101 End-to-End Encryption under Attack 31 May 2023
- #100 OpenSSL Cookbook Released Under CC BY-NC 26 Apr 2023
- #99 Sabre CT Log Issued Invalid SCTs 29 Mar 2023
- #98 CAA Expands into New Use Cases 28 Feb 2023
- #97 Password Managers and PBKDF2 in the Spotlight 31 Jan 2023
- #96 TrustCor Not Trusted 29 Dec 2022
- #95 The Battle of QWACs Is in Full Swing 30 Nov 2022
- #94 OpenSSL fixes buffer overflows in certificate parsing 1 Nov 2022
- #93 In memory of Peter Eckersley 29 Sep 2022
- #92 The end of SIDH and SIKE 31 Aug 2022
- #91 NIST announces preliminary winners of post-quantum competition 28 Jul 2022
- #90 Hertzbleed shows how CPU frequency scaling can lead to side-channel attacks 30 Jun 2022
- #89 Certificate Transparency data is used to compromise WordPress before installation 31 May 2022
- #88 Two zeros bypass Java’s ECDSA signature check 28 Apr 2022
- #87 Russia creates certificate authority in response to sanctions 31 Mar 2022
- #86 EU plans to mandate less secure certificates in browsers 28 Feb 2022
- #85 WebTransport allows TLS connections with certificate hash 27 Jan 2022
- #84 RFC 9155 deprecates MD5 and SHA-1 signatures in TLS handshake messages 30 Dec 2021
- #83 Post-Quantum Signatures in TLS will be challenging 30 Nov 2021
- #82 Expiration of DST Root CA causes problems with Let’s Encrypt certificates 28 Oct 2021
- #81 HTTPS Everywhere plug-in no longer needed 30 Sep 2021
- #80 Vulnerabilities show fragility of STARTTLS 31 Aug 2021
- #79 The end of FTP in browsers 30 Jul 2021
- #78 ALPACA shows TLS cross-protocol attacks 29 Jun 2021
- #77 QUIC graduates to RFC 9000 28 May 2021
- #76 In memoriam: Dan Kaminsky 29 Apr 2021
- #75 IETF formally deprecates TLS 1.0 and 1.1 31 Mar 2021
- #74 Rust and cryptographic code 25 Feb 2021
- #73 Google Chrome distrusts Camerfirma 28 Jan 2021
- #72 Cross-signature will keep Let’s Encrypt compatible with old Android 5 Jan 2021
- #71 Firefox introduces HTTPS-only mode 26 Nov 2020
- #70 Chrome developers want to eliminate mixed content 29 Oct 2020
- #69 Raccoon attack shows design flaw in old TLS 30 Sep 2020
- #68 Great Firewall of China blocks encrypted SNI extension 27 Aug 2020
- #67 Intermediate certificates with OCSP capability cause trouble 30 Jul 2020
- #66 Expired AddTrust certificate causes trouble 30 Jun 2020
- #65 Private key of DigiCert Certificate Transparency log compromised 28 May 2020
- #64 GCC code analyzer finds bug in OpenSSL 30 Apr 2020
- #63 The Let’s Encrypt Certificate Authority Authorization incident 31 Mar 2020
- #62 One-year certificate lifetimes are coming 27 Feb 2020
- #61 Vulnerability in Windows allows certificate forgery with elliptic curves 30 Jan 2020
- #60 New factoring and discrete log records, but RSA stays safe 31 Dec 2019
- #59 Testing of delegated credentials begins 28 Nov 2019
- #58 Elliptic curve implementations vulnerable to Minerva timing attack 31 Oct 2019
- #57 Mozilla and Chrome about to enable DNS over HTTPS 26 Sep 2019
- #56 Firefox and Chrome will remove GUI indicator for Extended Validation certificates 29 Aug 2019
- #55 Kazakhstan intercepts TLS traffic 30 Jul 2019
- #54 Network Time Security could finally bring support for authenticated network time 27 Jun 2019
- #53 Certificate Authority Certinomis removed from Firefox browser 30 May 2019
- #52 Gmail starts using MTA-STS 30 Apr 2019
- #51 Trouble with a missing random bit in serial numbers 28 Mar 2019
- #50 DarkMatter from the United Arab Emirates operates a certificate authority 28 Feb 2019
- #49 Disabling insecure Let’s Encrypt validation will cause some broken HTTPS setups 31 Jan 2019
- #48 Google starts CECPQ2, a new postquantum key exchange for TLS 3 Jan 2019
- #47 Attacking cryptography with side channels 29 Nov 2018
- #46 The end of TLS 1.0 and 1.1 30 Oct 2018
- #45 Visa certificate authority in trouble 27 Sep 2018
- #44 TLS 1.3 is here 30 Aug 2018
- #43 Chrome now says “not secure” for HTTP web pages 31 Jul 2018
- #42 Does TLS have to change constantly to make it future-proof? 28 Jun 2018
- #41 Domain fronting: Cloud providers stop censorship-circumvention tool 31 May 2018
- #40 Certificate Transparency logging is now mandatory 30 Apr 2018
- #39 Trustico debacle shows risk of key generation by resellers 29 Mar 2018
- #38 Chrome will mark HTTP pages as not secure 28 Feb 2018
- #37 Cloud provider vulnerability causes Let's Encrypt to disable SNI domain validation 31 Jan 2018
- #36 Private keys in software from Blizzard, Electronic Arts, Microsoft, and BRAK 3 Jan 2018
- #35 Return of Bleichenbacher's Oracle Attack (ROBOT) 12 Dec 2017
- #34 Comodo gets controversial new owner 30 Nov 2017
- #33 Why TLS 1.3 isn’t there yet 31 Oct 2017
- #32 CAA is now mandatory 28 Sep 2017
- #31 Symantec sells certificate business to DigiCert 31 Aug 2017
- #30 Leaked private keys and revocations based on fake private keys 31 Jul 2017
- #29 Cisco and Spotify ship private keys in applications 29 Jun 2017
- #28 Let's Encrypt downtime 31 May 2017
- #27 Certificate Transparency requirement delayed 28 Apr 2017
- #26 Google plans to distrust all current Symantec certificates 30 Mar 2017
- #25 SHA-1 is broken 28 Feb 2017
- #24 Firefox and Chrome start warning about insecure login forms 31 Jan 2017
- #23 2016: The year HTTPS became dominant 4 Jan 2017
- #22 TLS 1.3 in final stages and SHA-1 deprecation 30 Nov 2016
- #21 Certificate Transparency for all new certs, backdoors in primes, WoSign and Comodo 27 Oct 2016
- #20 Mozilla no longer trusts WoSign and StartCOM, Comodo issues top level domain certs 29 Sep 2016
- #19 SWEET32, HEIST/TIME, PAC and WPAD leak HTTPS URLs 31 Aug 2016
- #18 Version Intolerance and TLS 1.3, Google & Post-Quantum Cryptography, StartEncrypt 28 Jul 2016
- #17 Let's Encrypt trademark dispute, discrete logarithm record, ChaCha20 and more 30 Jun 2016
- #16 Nonce reuse in GCM, another Padding Oracle, HTTPS by default and more 26 May 2016
- #15 WordPress.com and others enable HTTPS by default 28 Apr 2016
- #14 SMTP Strict Transport Security may improve transport encryption for email 31 Mar 2016
- #13 DROWN attack shows danger of supporting old SSL v2 protocol 1 Mar 2016
- #12 OpenSSL security update and the trouble with non-safe primes 25 Feb 2016
- #11 New SLOTH and CurveSwap attacks against TLS discovered 27 Jan 2016
- #10 CloudFlare and Facebook propose to delay SHA1 deprecation 21 Dec 2015
- #9 eDellRoot certificate endangers users of Dell computers 30 Nov 2015
- #8 RC4 finally going away 15 Sep 2015
- #7 Logjam attack against weak DH key exchange 21 May 2015
- #6 FREAK attacks SSL/TLS clients 06 Mar 2015
- #5 SHA1 deprecation continues 13 Feb 2015
- #4 New POODLE attack on TLS discovered 08 Dec 2014
- #3 Support for SSL v3 is eroding 28 Nov 2014
- #2 POODLE attack on SSL 3 16 Oct 2014
- #1 SHA1 Deprecation 02 Oct 2014
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