Search: “Let's Encrypt”

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CategoryAll Vulnerability 399 Malware 397 Ransomware 391 Exploit / PoC 253 Data breach 207 Policy & legal 174 Industry 141 Threat actor 113 Phishing & fraud 97 Research 42 AI safety & security 23 AI tools & infra 23 AI industry 17 Tools 13

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On The (Perceived) Value of EV Certs, Commercial CAs, Phishing and Let's Encrypt

Troy HuntJul 19, 20:29 UTC · Jul 19, 2017Phishing & fraud

30

Everything you need to know about loading a free Let's Encrypt certificate into an Azure website

Troy HuntJul 6, 12:33 UTC · Jul 6, 2016Policy & legal

30

Let's Encrypt Revoking 3 Million TLS Certificates Issued Incorrectly Due to a Bug

The Hacker NewsMar 5, 13:36 UTC · Mar 5, 2020Industry

30

Let's Encrypt CA is revoking over 3 Million TLS certificates due to a bug

Security AffairsMar 4, 11:16 UTC · Mar 4, 2020Vulnerability

30

Let's Encrypt has already issued one Million certificates

Security AffairsMar 5, 22:41 UTC · Mar 5, 2018Industry

30

Let's Encrypt Vulnerability

Schneier on SecurityMar 4, 06:46 UTC · Mar 4, 2020Vulnerability

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Let's Encrypt Issued A Billion Free SSL Certificates in the Last 4 Years

The Hacker NewsFeb 28, 12:26 UTC · Feb 28, 2020Malware

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Let's Encrypt will revoke 3m+ TLS/SSL certificates

Help Net SecurityMar 6, 09:13 UTC · Mar 6, 2020Industry

30

Let's Encrypt works toward post-quantum certificates at web scale

Help Net SecurityJun 5, 00:00 UTC · Jun 5, 2026Industry

30

Let's Encrypt rolls out 6-day and IP-based certificates

Help Net SecurityJan 20, 00:00 UTC · Jan 20, 2026Industry

30

Let's Encrypt Issues Three Billionth Certificate

Infosecurity MagazineNov 30, 10:30 UTC · Nov 30, 2022Threat actor

45

The 6

Troy HuntOct 18, 19:59 UTC · Oct 18, 2017Phishing & fraud

30

EV certificate usage declining: Is the internet becoming more secure?

Help Net SecurityDec 13, 00:00 UTC · Dec 13, 2021AI tools & infra

30

Phishing in a Nutshell: January

Palo Alto Unit 42Nov 1, 12:02 UTC · Nov 1, 2018Phishing & fraud

42

Hacking a Brazilian Bank

Schneier on SecurityJan 27, 14:18 UTC · Jan 27, 2020Phishing & fraud

30

DNSpionage Campaign Targets Middle East

Cisco TalosNov 27, 15:02 UTC · Nov 27, 2018Threat actor1

45

Let's Encrypt Is Making Web Encryption Easier

Schneier on SecurityJan 27, 14:15 UTC · Jan 27, 2020Research

30

Friday Squid Blogging: Squid from Utensils

Schneier on SecurityJan 27, 14:17 UTC · Jan 27, 2020Vulnerability

42

HTTPS adoption has reached the tipping point

Troy HuntJan 30, 12:07 UTC · Jan 30, 2017Industry

55

Flaws in Popular Self-Encrypting SSDs Let Attackers Decrypt Data

The Hacker NewsNov 8, 19:09 UTC · Nov 8, 2018Vulnerability

55

GnuPG Flaw in Encryption Tools Lets Attackers Spoof Anyone's Signature

The Hacker NewsJun 15, 00:00 UTC · Jun 15, 2018Vulnerability CVE-2018-12020

60

Short-Lived Certificates Coming to Let's Encrypt

Schneier on SecurityDec 15, 00:00 UTC · Dec 15, 2024Industry

30

WhatsApp to Finally Let Users Encrypt Their Chat Backups in the Cloud

The Hacker NewsSep 15, 00:00 UTC · Sep 15, 2021Research

30

Exposing TAG-53’s Credential Harvesting Infrastructure Used for Russia

Recorded FutureAug 21, 00:00 UTC · Aug 21, 2025Threat actor

45

Extended Validation Certificates are Dead

Troy HuntSep 17, 22:02 UTC · Sep 17, 2018Phishing & fraud

30

Journey to an extended validation certificate

Troy HuntDec 19, 08:24 UTC · Dec 19, 2016Data breach

57

HTTPS Is Easy!

Troy HuntJun 27, 08:25 UTC · Jun 27, 2018Industry

30

The Decreasing Usefulness of Positive Visual Security Indicators (and the Importance of Negative Ones)

Troy HuntMay 7, 08:35 UTC · May 7, 2018Phishing & fraud

30

New Linux Bug Lets Attackers Hijack Encrypted VPN Connections

The Hacker NewsDec 6, 11:26 UTC · Dec 6, 2019Vulnerability CVE-2019-14899

35

DUHK Attack Lets Hackers Recover Encryption Key Used in VPNs & Web Sessions

The Hacker NewsOct 24, 18:08 UTC · Oct 24, 2017Vulnerability

30

Alleged Iran-linked APT groups behind global DNS Hijacking campaign

Security AffairsJan 10, 14:48 UTC · Jan 10, 2019Threat actor

57

Week in review: Fully patched FortiGate firewalls are getting compromised, attackers probe Cisco RCE flaw

Help Net SecurityJan 25, 00:00 UTC · Jan 25, 2026Vulnerability CVE-2026-20045 CVE-2025-59718

60

New Bluetooth Vulnerability Lets Attackers Spy On Encrypted Connections

The Hacker NewsAug 15, 00:00 UTC · Aug 15, 2019Vulnerability CVE-2019-9506

47

Google, Linux Foundation, Red Hat release free tool to secure software supply chains

The RecordNov 17, 00:00 UTC · Nov 17, 2022Vulnerability

55

Weekly Update 138

Troy HuntMay 9, 23:57 UTC · May 9, 2019Phishing & fraud

30

How to get your SSL for free on a Shared Azure website with CloudFlare

Troy HuntApr 9, 23:00 UTC · Apr 9, 2015AI tools & infra

30

COINHOARDER: Tracking a Ukrainian Bitcoin Phishing Ring DNS Style

Cisco TalosFeb 14, 15:54 UTC · Feb 14, 2018Phishing & fraud

30

A phishing campaign with nation-state hallmarks is targeting Chinese government agencies

CyberScoopAug 8, 23:43 UTC · Aug 8, 2019Threat actor in the wild

60

Hackshit PhaaS platform, even more easy to power Phishing campaigns

Security AffairsJul 30, 21:33 UTC · Jul 30, 2017Threat actor

45

New Attack Lets Hackers Decrypt VoLTE Encryption to Spy on Phone Calls

The Hacker NewsAug 15, 00:00 UTC · Aug 15, 2020Vulnerability

30