Employer Visibility Snapshot
Mimecast ranks #23 of 66 Cybersecurity employers in United Kingdom on the PerceptionX Employer Visibility Index (September 2026), with an AI Visibility Score of 8.1 out of 100. Across all 1415 tracked employers in United Kingdom, Mimecast ranks #355.
AI models most frequently position Mimecast alongside Darktrace, BAE Systems, and BT when discussing Cybersecurity employers.
The company shows strongest employer visibility in Interview Experience, Job Security and Leadership. Visibility gaps exist in Application & Communication, Candidate Feedback and Career Opportunities, where competitors tend to dominate the AI narrative.
Mimecast's Visibility Score has risen from 2.3 to 8.1 across its last 2 measurements (since February 2026), climbing 10 places in the Cybersecurity rankings. Over that period it has moved ahead of Check Point Software and F-secure. It now trails Thales by 2.7 points.
This analysis is based on AI-generated responses from ChatGPT, Google Gemini, and Perplexity. Data is refreshed regularly to reflect changes in AI employer perception.
Data updated 2026-09-20. Machine-readable data: https://employers.perceptionx.ai/api/company/mimecast.
Theme rankings — Cybersecurity, United Kingdom
| Theme | Rank | Score |
|---|---|---|
| Leadership | #12 | 33.3 |
| Interview Experience | #16 | 33.3 |
| Job Security | #18 | 33.3 |
Ranking history
| Month | Rank | Visibility Score |
|---|---|---|
| February 2026 | #33 | 2.3 |
FAQs
What does Mimecast's Employer Visibility Score mean?
Mimecast's Visibility Score of 8.1 measures how frequently AI models like ChatGPT, Google Gemini, and Perplexity mention Mimecast when candidates ask about Cybersecurity employers. A higher score means greater discoverability in AI-powered job research.
How does Mimecast compare to competitors?
Mimecast ranks #23 out of 66 Cybersecurity companies. AI most frequently mentions Mimecast alongside Darktrace, BAE Systems, BT, Sophos, Deloitte. This ranking is based on visibility across ChatGPT, Google Gemini, and Perplexity.
Why are Sentiment and Relevance locked?
Sentiment and Relevance data — along with full job function breakdowns — are part of the PerceptionX intelligence report. The public index shows Visibility only. Speak to our team to access the full picture for Mimecast.
How can Mimecast improve its score?
Visibility is driven by the quality, consistency, and reach of an employer's brand content across sources AI models train on. PerceptionX identifies the specific themes and platforms where Mimecast is underrepresented and provides strategic recommendations to close those gaps.
How often is Mimecast's data updated?
Rankings are recalculated monthly. Each update reflects the latest AI model outputs and any changes in how Mimecast is described in response to candidate research queries.
Does Mimecast need to be a PerceptionX customer to appear here?
No. The Visibility Index tracks employers based on how AI models describe them — any employer with sufficient AI coverage appears automatically. PerceptionX customers gain access to deeper analytics, competitive intelligence, and improvement recommendations.
What does a full PerceptionX report include?
A full PerceptionX report covers additional AI models, custom prompts tailored to your specific job functions and markets, Sentiment and Relevance scoring alongside Visibility, a breakdown of which sources AI draws on, and proprietary strategic recommendations for closing gaps in AI employer perception.