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Zero-Click Calendar Exfiltration Reveals MCP Security Risk in 11.ai
Zero-Click Calendar Exfiltration Reveals MCP Security Risk in 11.ai
Zero-Click Calendar Exfiltration Reveals MCP Security Risk in 11.ai

Zero-Click Calendar Exfiltration Reveals MCP Security Risk in 11.ai

Zero-Click Calendar Exfiltration Reveals MCP Security Risk in 11.ai

Jul 10, 2025

Jul 10, 2025

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6 min read

Featured blogs

Introducing ARGUS: AI runtime security by Repello, with images of dashboard

Introducing ARGUS: Runtime Security Layer for your GenAI systems

Introducing ARGUS: Runtime Security Layer for your GenAI systems

Jun 19, 2025

Jun 19, 2025

Jun 19, 2025

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6 min read

BIG NEWS: Repello AI Raises $1.2M to Secure the future of AI 🚀

BIG NEWS: Repello AI Raises $1.2M to Secure the future of AI 🚀

Jun 16, 2025

Jun 16, 2025

Jun 16, 2025

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9 min read

Introducing ARTEMIS: Automated Red Teaming to Secure your AI applications

Introducing ARTEMIS: Automated Red Teaming to Secure your AI applications

Mar 18, 2025

Mar 18, 2025

Mar 18, 2025

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5 min read

Exploiting Zapier’s Gmail auto-reply agent for data exfiltration

Exploiting Zapier’s Gmail auto-reply agent for data exfiltration

Jul 24, 2025

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6 min read

Security threats in Agentic AI Browsers

Jul 15, 2025

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6 min read

Zero-Click Calendar Exfiltration Reveals MCP Security Risk in 11.ai

Zero-Click Calendar Exfiltration Reveals MCP Security Risk in 11.ai

Jul 10, 2025

|

6 min read

Introducing ARGUS: AI runtime security by Repello, with images of dashboard

Introducing ARGUS: Runtime Security Layer for your GenAI systems

Jun 19, 2025

|

6 min read

BIG NEWS: Repello AI Raises $1.2M to Secure the future of AI 🚀

Jun 16, 2025

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9 min read

When the Model Grades the Model: Demystifying ‘LLM-as-a-Judge’ for Practitioners

May 28, 2025

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9 min read

Ghibli Dreams vs. Adversarial Schemes: Attacks on Diffusion Models

May 15, 2025

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9 min read

Turning Background Noise into a Prompt Injection Attacks in Voice AI

May 15, 2025

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9 min read

MCP tool poisoning to RCE

Apr 17, 2025

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9 min read

Securing Machine Learning Models: A Comprehensive Guide to Model Scanning

Apr 4, 2025

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6 min read

Repello AI and LimeChat Join Forces to Make AI Chatbots More Secure

Mar 25, 2025

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4 min read

Introducing ARTEMIS: Automated Red Teaming to Secure your AI applications

Mar 18, 2025

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5 min read

Prompt Injection using Emojis🤯🫣😈👻

Mar 4, 2025

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5 min read

Distilled, but Dangerous? Assessing the Safety of Models Derived from DeepSeek-R1

Feb 19, 2025

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5 min read

Introducing Matrix AI Security Challenge: An Immersive Cyberpunk Hacking Game

Feb 7, 2025

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3 min read

AI Evaluation, Metrics, Frameworks, & Checklist

LLM Evaluation Metrics, Frameworks, and Checklist in 2024

Oct 29, 2024

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23 min read

Prompt injection attack examples

10 prompt injection attack examples

Oct 28, 2024

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LLM Pentesting: Checklist and Tools

LLM Pentesting Checklist and Tools

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Data security and Privacy

Data Security and Privacy for AI Systems

Oct 20, 2024

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Best LLM Red Teaming Platforms

Top 7 LLM Red Teaming Platforms in 2024

Oct 7, 2024

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8 min read

OWASP top 10 for LLMs part 2

The OWASP Top 10 for Large Language Models Explained for CISOs: Part 2

Sep 20, 2024

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10 min read

OWASP Top 10 for LLMs for CISO Part 1

The OWASP Top 10 for Large Language Models Explained for CISOs: Part 1

Sep 19, 2024

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11 min read

How to secure AI Applications

How to Secure Your AI Applications: Essential Strategies for Safety

Sep 18, 2024

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7 min read

How to secure AI models

Protecting Your AI Models: Simple Strategies for Security

Sep 17, 2024

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6 min read

Popular AI Vulnerabilties in 2024

Top 6 AI Security Vulnerabilities in 2024

Sep 16, 2024

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9 min read

AI Jailbreaking Techinques & Safeguards

Understanding AI Jailbreaking: Techniques and Safeguards Against Prompt Exploits

Sep 15, 2024

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9 min read

Best AI Jailbreak communities

Top 11 AI Jailbreak Communities to Explore

Sep 21, 2024

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5 min read

GenAI Security

Comprehensive Guide to GenAI Security

Sep 14, 2024

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Jailbreak Prompt

Latest Claude 3.5 & ChatGPT Jailbreak Prompts 2024

Sep 10, 2024

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8 min read

AI Risk Management

Navigating AI Risk Management: A Simple Guide

Sep 1, 2024

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Guide to AI Red Teaming

The Essential Guide to AI Red Teaming in 2024

Sep 2, 2024

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12 min read

Denial of Wallet - Repello AI

Denial Of Wallet

Aug 26, 2024

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5 min read

A meme about Llama3 being racist.

How RAG Poisoning Made Llama3 Racist!

May 28, 2024

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12 min read

Image of Prompt Guard shield

Breaking Meta's Prompt Guard - Why Your AI Needs More Than Just Guardrails?

Aug 6, 2024

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20 min read

Exploiting Zapier’s Gmail auto-reply agent for data exfiltration

Exploiting Zapier’s Gmail auto-reply agent for data exfiltration

Jul 24, 2025

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6 min read

Security threats in Agentic AI Browsers

Jul 15, 2025

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6 min read

Zero-Click Calendar Exfiltration Reveals MCP Security Risk in 11.ai

Zero-Click Calendar Exfiltration Reveals MCP Security Risk in 11.ai

Jul 10, 2025

|

6 min read

Introducing ARGUS: AI runtime security by Repello, with images of dashboard

Introducing ARGUS: Runtime Security Layer for your GenAI systems

Jun 19, 2025

|

6 min read

BIG NEWS: Repello AI Raises $1.2M to Secure the future of AI 🚀

Jun 16, 2025

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9 min read

When the Model Grades the Model: Demystifying ‘LLM-as-a-Judge’ for Practitioners

May 28, 2025

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9 min read

Ghibli Dreams vs. Adversarial Schemes: Attacks on Diffusion Models

May 15, 2025

|

9 min read

Turning Background Noise into a Prompt Injection Attacks in Voice AI

May 15, 2025

|

9 min read

MCP tool poisoning to RCE

Apr 17, 2025

|

9 min read

Securing Machine Learning Models: A Comprehensive Guide to Model Scanning

Apr 4, 2025

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6 min read

Repello AI and LimeChat Join Forces to Make AI Chatbots More Secure

Mar 25, 2025

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4 min read

Introducing ARTEMIS: Automated Red Teaming to Secure your AI applications

Mar 18, 2025

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5 min read

Prompt Injection using Emojis🤯🫣😈👻

Mar 4, 2025

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5 min read

Distilled, but Dangerous? Assessing the Safety of Models Derived from DeepSeek-R1

Feb 19, 2025

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5 min read

Introducing Matrix AI Security Challenge: An Immersive Cyberpunk Hacking Game

Feb 7, 2025

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AI Evaluation, Metrics, Frameworks, & Checklist

LLM Evaluation Metrics, Frameworks, and Checklist in 2024

Oct 29, 2024

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23 min read

Prompt injection attack examples

10 prompt injection attack examples

Oct 28, 2024

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LLM Pentesting: Checklist and Tools

LLM Pentesting Checklist and Tools

Oct 27, 2024

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Data security and Privacy

Data Security and Privacy for AI Systems

Oct 20, 2024

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Best LLM Red Teaming Platforms

Top 7 LLM Red Teaming Platforms in 2024

Oct 7, 2024

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OWASP top 10 for LLMs part 2

The OWASP Top 10 for Large Language Models Explained for CISOs: Part 2

Sep 20, 2024

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10 min read

OWASP Top 10 for LLMs for CISO Part 1

The OWASP Top 10 for Large Language Models Explained for CISOs: Part 1

Sep 19, 2024

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11 min read

How to secure AI Applications

How to Secure Your AI Applications: Essential Strategies for Safety

Sep 18, 2024

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How to secure AI models

Protecting Your AI Models: Simple Strategies for Security

Sep 17, 2024

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Popular AI Vulnerabilties in 2024

Top 6 AI Security Vulnerabilities in 2024

Sep 16, 2024

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9 min read

AI Jailbreaking Techinques & Safeguards

Understanding AI Jailbreaking: Techniques and Safeguards Against Prompt Exploits

Sep 15, 2024

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9 min read

Best AI Jailbreak communities

Top 11 AI Jailbreak Communities to Explore

Sep 21, 2024

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GenAI Security

Comprehensive Guide to GenAI Security

Sep 14, 2024

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6 min read

Jailbreak Prompt

Latest Claude 3.5 & ChatGPT Jailbreak Prompts 2024

Sep 10, 2024

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AI Risk Management

Navigating AI Risk Management: A Simple Guide

Sep 1, 2024

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Guide to AI Red Teaming

The Essential Guide to AI Red Teaming in 2024

Sep 2, 2024

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12 min read

Denial of Wallet - Repello AI

Denial Of Wallet

Aug 26, 2024

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5 min read

A meme about Llama3 being racist.

How RAG Poisoning Made Llama3 Racist!

May 28, 2024

|

12 min read

Image of Prompt Guard shield

Breaking Meta's Prompt Guard - Why Your AI Needs More Than Just Guardrails?

Aug 6, 2024

|

20 min read

Exploiting Zapier’s Gmail auto-reply agent for data exfiltration

Exploiting Zapier’s Gmail auto-reply agent for data exfiltration

Jul 24, 2025

|

6 min read

Security threats in Agentic AI Browsers

Jul 15, 2025

|

6 min read

Zero-Click Calendar Exfiltration Reveals MCP Security Risk in 11.ai

Zero-Click Calendar Exfiltration Reveals MCP Security Risk in 11.ai

Jul 10, 2025

|

6 min read

Introducing ARGUS: AI runtime security by Repello, with images of dashboard

Introducing ARGUS: Runtime Security Layer for your GenAI systems

Jun 19, 2025

|

6 min read

BIG NEWS: Repello AI Raises $1.2M to Secure the future of AI 🚀

Jun 16, 2025

|

9 min read

When the Model Grades the Model: Demystifying ‘LLM-as-a-Judge’ for Practitioners

May 28, 2025

|

9 min read

Ghibli Dreams vs. Adversarial Schemes: Attacks on Diffusion Models

May 15, 2025

|

9 min read

Turning Background Noise into a Prompt Injection Attacks in Voice AI

May 15, 2025

|

9 min read

MCP tool poisoning to RCE

Apr 17, 2025

|

9 min read

Securing Machine Learning Models: A Comprehensive Guide to Model Scanning

Apr 4, 2025

|

6 min read

Repello AI and LimeChat Join Forces to Make AI Chatbots More Secure

Mar 25, 2025

|

4 min read

Introducing ARTEMIS: Automated Red Teaming to Secure your AI applications

Mar 18, 2025

|

5 min read

Prompt Injection using Emojis🤯🫣😈👻

Mar 4, 2025

|

5 min read

Distilled, but Dangerous? Assessing the Safety of Models Derived from DeepSeek-R1

Feb 19, 2025

|

5 min read

Introducing Matrix AI Security Challenge: An Immersive Cyberpunk Hacking Game

Feb 7, 2025

|

3 min read

AI Evaluation, Metrics, Frameworks, & Checklist

LLM Evaluation Metrics, Frameworks, and Checklist in 2024

Oct 29, 2024

|

23 min read

Prompt injection attack examples

10 prompt injection attack examples

Oct 28, 2024

|

17 min read

LLM Pentesting: Checklist and Tools

LLM Pentesting Checklist and Tools

Oct 27, 2024

|

9 min read

Data security and Privacy

Data Security and Privacy for AI Systems

Oct 20, 2024

|

14 min read

Best LLM Red Teaming Platforms

Top 7 LLM Red Teaming Platforms in 2024

Oct 7, 2024

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8 min read

OWASP top 10 for LLMs part 2

The OWASP Top 10 for Large Language Models Explained for CISOs: Part 2

Sep 20, 2024

|

10 min read

OWASP Top 10 for LLMs for CISO Part 1

The OWASP Top 10 for Large Language Models Explained for CISOs: Part 1

Sep 19, 2024

|

11 min read

How to secure AI Applications

How to Secure Your AI Applications: Essential Strategies for Safety

Sep 18, 2024

|

7 min read

How to secure AI models

Protecting Your AI Models: Simple Strategies for Security

Sep 17, 2024

|

6 min read

Popular AI Vulnerabilties in 2024

Top 6 AI Security Vulnerabilities in 2024

Sep 16, 2024

|

9 min read

AI Jailbreaking Techinques & Safeguards

Understanding AI Jailbreaking: Techniques and Safeguards Against Prompt Exploits

Sep 15, 2024

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9 min read

Best AI Jailbreak communities

Top 11 AI Jailbreak Communities to Explore

Sep 21, 2024

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5 min read

GenAI Security

Comprehensive Guide to GenAI Security

Sep 14, 2024

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6 min read

Jailbreak Prompt

Latest Claude 3.5 & ChatGPT Jailbreak Prompts 2024

Sep 10, 2024

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8 min read

AI Risk Management

Navigating AI Risk Management: A Simple Guide

Sep 1, 2024

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8 min read

Guide to AI Red Teaming

The Essential Guide to AI Red Teaming in 2024

Sep 2, 2024

|

12 min read

Denial of Wallet - Repello AI

Denial Of Wallet

Aug 26, 2024

|

5 min read

A meme about Llama3 being racist.

How RAG Poisoning Made Llama3 Racist!

May 28, 2024

|

12 min read

Image of Prompt Guard shield

Breaking Meta's Prompt Guard - Why Your AI Needs More Than Just Guardrails?

Aug 6, 2024

|

20 min read

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Repello tech background with grid pattern symbolizing AI security

Secure your AI.

Outsmart attackers.

Subscribe to our newsletter

Home

ARTEMIS

ARGUS

Agent Wiz

Blogs

Partners

About us

Careers

Privacy policy

Terms and conditions

8 The Green, Ste A
Dover, DE 19901, United States of America

contact@repello.ai

Follow us on:

Linkedin icon
X icon
Github icon
Youtube icon

© Repello Inc. All rights reserved.

Repello tech background with grid pattern symbolizing AI security

Secure your AI.

Outsmart attackers.

Subscribe to our newsletter

Home

ARTEMIS

ARGUS

Agent Wiz

Blogs

Partners

About us

Careers

Privacy policy

Terms and conditions

8 The Green, Ste A
Dover, DE 19901, United States of America

contact@repello.ai

Follow us on:

Linkedin icon
X icon
Github icon
Youtube icon

© Repello Inc. All rights reserved.

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