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#Email Security

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INFO
Threat Intel

Autonomous AI Agents Email Security Insights on Perimeter Defences

An autonomous AI agent emailed security researcher Bruce Schneier detailing perimeter defences, anti-bot mechanisms, and invisible prompt injections.

Runtime Rebel Intel
3 min read · Sep 2, 2026
AI Email Summarizers Vulnerable to Hidden HTML Prompts
MEDIUM
Threat Intel

AI Email Summarizers Vulnerable to Hidden HTML Prompts

Attackers can use invisible HTML prompts to manipulate AI email summarizers, generating false information and potential security risks.

Runtime Rebel Intel
4 min read · Aug 26, 2026
INFO
Threat Intel

Detecting AI-Driven Polymorphic Phishing Attacks

AI-powered phishing attacks leverage personalization and polymorphic evasion, challenging traditional filters. MSPs must focus on post-compromise detection.

Runtime Rebel Intel
4 min read · Aug 21, 2026
INFO
Threat Intel

AegisAI Secures $36M to Combat BEC with AI-Powered Email Security

AegisAI raises $36 million to enhance its AI-driven email security platform, targeting sophisticated Business Email Compromise and phishing campaigns.

Runtime Rebel Intel
4 min read · Jul 24, 2026
Russian APT Exploits Zimbra Zero-Day to Exfiltrate Mail and 2FA Codes
HIGH
Threat Intel

Russian APT Exploits Zimbra Zero-Day to Exfiltrate Mail and 2FA Codes

Russian state-supported actors leveraged a Zimbra Zero-Day to steal 90 days of email history and bypass security by exfiltrating 2FA recovery codes.

Runtime Rebel Intel
3 min read · Jul 23, 2026
HIGH
Identity & Access

Email Account Takeover via 2FA Compromise: Mitigating Identity Theft Risk

An identity theft incident highlights how easily email account takeover via compromised 2FA can lead to broader security breaches. Learn to protect your digital identity.

Runtime Rebel Intel
4 min read · Jul 22, 2026

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Apple Patches Hide My Email Bug Exposing Real Addresses in Logs
MEDIUM
Identity & Access

Apple Patches Hide My Email Bug Exposing Real Addresses in Logs

Apple addresses a privacy flaw in Hide My Email that leaked actual user email addresses in mail logs, undermining the service’s core anonymity features.

Runtime Rebel Intel
4 min read · Jul 21, 2026
Text Salting: Hidden Text Tactics Bypass AI Email Filters
MEDIUM
Threat Intel

Text Salting: Hidden Text Tactics Bypass AI Email Filters

Over 1 million emails are leveraging text salting techniques, embedding hidden characters to bypass AI and LLM-based email security filters, posing a significant…

Runtime Rebel Intel
5 min read · Jul 16, 2026
Finance Executive Email Compromise via Native Windows Tools
HIGH
Threat Intel

Finance Executive Email Compromise via Native Windows Tools

A monthslong campaign targeted a global stock exchange executive, leveraging native Windows tools for persistence and unauthorized email monitoring.

Runtime Rebel Intel
3 min read · Jun 3, 2026
MEDIUM
Threat Intel

New Phishing Campaign Exploits SVG Attachments to Evade Filters

Security researchers report a wave of phishing emails using malicious SVG attachments to deliver scripts and bypass email security gateways. Learn how to defend.

Runtime Rebel Intel
4 min read · Jun 2, 2026
MEDIUM
Threat Intel

Quishing Evasion: Malicious QR Codes Bypassing Security Filters

A technical analysis of how malicious QR codes (quishing) bypass email security filters and actionable mitigation steps for security operations centers.

Runtime Rebel Intel
3 min read · Jun 1, 2026
INFO
Threat Intel

Ocean Launches Agentic AI Email Security Platform with $28M Funding

Ocean emerges from stealth with $28M to deploy specialized AI agents that simulate human reasoning to detect sophisticated phishing and BEC threats.

Runtime Rebel Intel
3 min read · May 21, 2026
MEDIUM
Vulnerabilities

Outlook Junk Folder Bypass: How Attackers Hide Malicious URLs

Discover how attackers bypass Microsoft Outlook's Junk folder link preview protection using HTML manipulation to hide malicious phishing URLs from users.

Runtime Rebel Intel
4 min read · May 14, 2026
MEDIUM
Threat Intel

Amazon SES Phishing Abuse: Evading Security Filters via AWS Infrastructure

Threat actors are increasingly exploiting Amazon Simple Email Service (SES) to bypass email security filters by leveraging high-reputation AWS domains.

Runtime Rebel Intel
4 min read · May 4, 2026
AI-Powered Phishing Surges: Defending Against Advanced Attacks
HIGH
Threat Intel

AI-Powered Phishing Surges: Defending Against Advanced Attacks

Explore the surge in AI-powered phishing, how threat actors are leveraging it for personalized attacks, and critical defensive strategies for organizations.

Runtime Rebel Intel
4 min read · Apr 24, 2026
MEDIUM
Threat Intel

Apple ID Alerts Abused for Phishing via Legitimate Servers

Threat actors are exploiting Apple's account notification system to send authentic-looking phishing emails that bypass traditional spam filters and SPF checks.

Runtime Rebel Intel
4 min read · Apr 19, 2026
MEDIUM
Malware

ZIP Archive Evasion: Detecting Malicious Multi-File Payloads

Analyze how threat actors use ZIP archives containing over 100,000 files to bypass security inspection and overwhelm automated analysis tools.

Runtime Rebel Intel
4 min read · Mar 27, 2026
HIGH
Threat Intel

Bubble Platform Abuse: Credential Phishing Targets Microsoft Accounts

Threat actors are abusing the Bubble no-code platform to host sophisticated phishing campaigns, bypassing traditional detection and targeting Microsoft account…

Runtime Rebel Intel
5 min read · Mar 25, 2026
MEDIUM
Threat Intel

SVG-Based Phishing: Using Scalable Vector Graphics for Credential Theft

Discover how threat actors leverage SVG files to bypass email filters and execute credential theft through embedded JavaScript and HTML forms.

Runtime Rebel Intel
4 min read · Mar 25, 2026
MEDIUM
Threat Intel

Abusing .arpa DNS and IPv6 to Bypass Phishing Defenses

Threat actors exploit .arpa domains and IPv6 reverse DNS for phishing evasion, bypassing email security gateways and domain reputation checks.

Runtime Rebel Intel
4 min read · Mar 8, 2026
TOAD Emails: The 'Call This Number' Gateway Bypass Threat
MEDIUM
Threat Intel

TOAD Emails: The 'Call This Number' Gateway Bypass Threat

Attackers use Telephone-Oriented Attack Delivery (TOAD) with 'call this number' emails to bypass gateways, relying on social engineering post-call.

Runtime Rebel Intel
4 min read · Feb 25, 2026