Shut down prompt injection attacks targeting AI email agents and tools
Adversaries use prompt injection attacks to turn your AI against you with agent manipulation, data exfiltration, verdict confusion, and more.


Prompt injection in a nutshell
Prompt injection attacks attempt to manipulate or deceive the AI agents and tools that have become ubiquitous in email for productivity and security.
Direct prompt injection targets LLM-connected workflows or agent-backed mailboxes to get them to take an unrequested action: exfiltrate data, forward or delete mail, surface a phishing lure, and more.
Indirect prompt injection attacks use hidden text engineered to fool AI/ML email analysis into flipping a malicious verdict toward benign.

The explosion and sophistication of AI-generated email attacks requires a solution that provides best-in-class efficacy, but also the ability to contextualize and respond to threats in real time. With Sublime, our team can prevent, detect, and respond to email-borne threats of today and the future.
What makes prompt injection so effective
Prompt injection doesn’t target users, so traditional detections and behavioral signals can’t be used to catch these attacks.
Hidden
Adversaries try to evade human analysts and security scanner by hiding prompt injection attacks in invisible text and code comments.
Manipulative
Prompt injection uses AI to do its dirty work, turning trusted tools with permissive access into malicious actors.
Invasive
AI is integrated into every aspect of digital life. Each new AI agent or tool is a possible attack surface.
Prompt injection attacks are evolving
Prompt injection targeting agents and LLMs through email are a fairly new attack type. This means that they are still in a phase of rapid evolution. You need security that can keep up and stop them no matter what form they take.
Sublime uses a combination of AI agents, machine learning, and behavioral analysis to shut down email attacks with industry-leading efficacy.
.png)
Threats evolve daily and Sublime stays current as attacker behavior changes, all while keeping detections grounded in logic you can inspect and adjust.
.png)
Our AI-powered Autonomous Security Analyst (ASA) fully automates triage and remediation of user-reported emails. Then our Autonomous Detection Engineer (ADÉ) takes ASA results and closes coverage gaps for novel attacks.

Ready to see Sublime in action?
Experience how our email security platform stops advanced threats while giving your team full transparency.
Latest from Sublime
The latest news, research, attack spotlights, and product updates.
Frequently asked questions
What is prompt injection?
What's the difference between direct and indirect email prompt injection?
How does prompt injection relate to the email security?
Can prompt injection be fully prevented?
What is a prompt injection attack against a RAG system?
Now is the time
See how Sublime delivers autonomous protection by default, with control on demand.
.avif)





.png)