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Email Security Tools and Protocols

Technical approaches to protecting email from threats, spoofing, and unauthorized access.

Authentication Protocols and Phishing Prevention

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Sidd Sathe

The Zimbra “Half-Click” Exploit: How Russian Hackers Read Government Email Without a Single Click!

Daniel Absi

SMTP vs POP3 vs IMAP: The Complete Guide to How Email Actually Works (And Where It Quietly Breaks)

Josepollman

My SPF Checker Missed a One-Letter Typo. Its Fix Would Have Hard-Coded the Lookalike’s Servers.

Zeliha Zengin

Phishing Analysis: Reading an Email Like an Investigator

Suped

Exchange 2016 and 2019 mail throttling: What to patch before September enforcement

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Karanam Shrivasta

Part 27 — Email Security & Phishing Defense

Anthony Bahn

How to Audit Appliance Configuration Changes After an Exploit

Sheikh Sabbir Hossain

Hackers Exploit Critical Barracuda Email Security Gateway Vulnerabilities to Gain Root Access

Josepollman

My SPF Checker Missed a One-Letter Typo. Its Fix Would Have Hard-Coded the Lookalike’s Servers.

joho no todai

Outlook.com Rejects Email With 550 5.7.1 as Senders Report Failures Across Multiple Services

See more stories

Who to follow

Popular this week

Sidd Sathe

The Zimbra “Half-Click” Exploit: How Russian Hackers Read Government Email Without a Single Click!

Daniel Absi

SMTP vs POP3 vs IMAP: The Complete Guide to How Email Actually Works (And Where It Quietly Breaks)

Josepollman

My SPF Checker Missed a One-Letter Typo. Its Fix Would Have Hard-Coded the Lookalike’s Servers.

Zeliha Zengin

Phishing Analysis: Reading an Email Like an Investigator

Suped

Exchange 2016 and 2019 mail throttling: What to patch before September enforcement

Latest stories

Karanam Shrivasta

Part 27 — Email Security & Phishing Defense

Anthony Bahn

How to Audit Appliance Configuration Changes After an Exploit

Sheikh Sabbir Hossain

Hackers Exploit Critical Barracuda Email Security Gateway Vulnerabilities to Gain Root Access

Josepollman

My SPF Checker Missed a One-Letter Typo. Its Fix Would Have Hard-Coded the Lookalike’s Servers.

joho no todai

Outlook.com Rejects Email With 550 5.7.1 as Senders Report Failures Across Multiple Services

See more stories

Who to follow