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Overview
Armorblox provides cloud-based email security with personalized machine learning models that protect organizations from email-based threats like BEC and ransomware. It analyzes email content and sender behavior, using models tailored to each client and updated continuously to adapt to new threats. The company targets financial services, education, and healthcare, offering tools and templates to help teams respond to incidents on a subscription basis. Its goal is to reduce email-based cyber threats and protect sensitive data by delivering effective detection, protection, and response capabilities.
About Armorblox
Industries
Enterprise Software
Cybersecurity
AI & Machine Learning
Company Size
11-50
Company Stage
Series B
Total Funding
$46.5M
Headquarters
Sunnyvale, California
Founded
2017
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Simplify's Take
What believers are saying
- Cisco still lists Armorblox as current secure-email product, updated July 31, 2026.
- Cisco's March 23, 2026 marketplace release signals ongoing engineering investment.
- Cisco's distribution exposes Armorblox to enterprise buyers across the broader Security Cloud.
What critics are saying
- Armorblox's standalone brand vanished into Cisco, shrinking employer identity and exit optionality.
- Gatekeeper sued Cisco over Armorblox email controls in July 2023; patent risk persists.
- Microsoft and Google bundle adjacent protections, pressuring Cisco to commoditize Armorblox's features.
What makes Armorblox unique
- Cisco acquired Armorblox on July 14, 2023, embedding its NLU into Security Cloud.
- Armorblox pioneered language-model email defense against BEC, graymail, and data-loss workflows.
- Its technology analyzes identity, behavior, and message context, not simple keyword patterns.
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Funding
Total Funding
$46.5M
Meets
Industry Average
Funded Over
2 Rounds
General CatalystIndustry standards
Benefits
Medical, dental, & vision insurance
Company events
Personal development
Remote work
Home office stipend
Growth & Insights and Company News
6 month growth
↓ -76%1 year growth
↓ -76%2 year growth
↓ -76%Armorblox had raised more than $46 million in funding to date at the time of acquisition, and had recently completed a venture capital round led by SentinelOne Ventures in September 2022.
**2019:** Armorblox releases its AI-powered email security solution that employs the latest advances in Natural Language Processing (NLP) and Natural Language Understanding (NLU) to analyze email content and identify phishing attempts, business email compromise (BEC) attacks, and data loss.
Cisco a annoncé l'acquisition d'Armorblox, une start-up spécialisée dans la sécurisation du courrier électronique et des applications cloud. Elle...
Cisco Systems has entered a deal to purchase cybersecurity startup Armorblox in a bid to strengthen email, cloud, and enterprise communication system security, SiliconAngle reports.
Cisco is in the process of acquiring email security firm Armorblox for its predictive and generative artificial intelligence (AI) technology.
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About Armorblox
Industries
Enterprise Software
Cybersecurity
AI & Machine Learning
Company Size
11-50
Company Stage
Series B
Total Funding
$46.5M
Headquarters
Sunnyvale, California
Founded
2017
There are no jobs for Armorblox right now.
Find jobs on Simplify and start your career today