Alternatives to Microsoft 365 Defender
The top Cybersecurity companies similar to Microsoft 365 Defender, ranked by relevance (named competitors first, then how closely their sectors overlap) and our 0-100 AI-readiness score. Each links to a full profile with funding and team.
- SUSublime Security55CybersecuritySan Francisco, United States$191.0M
SentinelOne76CybersecurityMountain View, United States$799.5M
Malwarebytes58CybersecuritySanta Clara, United States$180.0M
Veriti56EnterpriseSan Francisco, United States$28.0M
Panorays52CybersecurityNew York, United States$62.0M
Orion Security49EnterpriseSan Francisco, United States$6.0M
Onyxia47EnterpriseTel Aviv, Israel$5.0M
Cyvore Security47EnterpriseTel Aviv, Israel
CYNC Secure47EnterpriseSan Francisco, United States
Acre Security45Physical SecurityAustin, USA$63.0M
Canonic Security45EnterpriseTel Aviv, Israel$6.0M- PAPando Cyber Security42CybersecurityTel Aviv, Israel$10.0M
Stride Security35EnterpriseSan Francisco, United States
CyberArk Software30CybersecurityNewton, United States$1.9B
CISOtronix30Enterprise
Controlsecurity18CybersecurityTel Aviv, Israel$1.5M
Aemetis15Climate TechCupertino, United States- MCMcAfee14CybersecuritySan Jose, United States
Armis Security85EnterpriseSan Carlos, United States$847.0M
Check Point Software72CybersecurityTel Aviv, Israel$1.5B
At-Bay70InsurTechNew York, United States$292.0M
Silverfort69EnterpriseBoston, United States$222.5M
Zero Networks67CybersecurityTel Aviv, Israel$100.0M
Duo Security66AuthenticationAnn Arbor, United States
Perception Point65EnterpriseTel Aviv, Israel$38.0M
Reco Labs65DataTel Aviv, Israel$123.0M
Zafran Security64EnterpriseTel Aviv, Israel$130.0M
Grip Security64CybersecurityTel Aviv, Israel$66.0M
Cisco Duo63CybersecurityAnn Arbor, United States$107.0M
Adaptive Shield62CybersecurityTel Aviv, Israel$10.0M
Red Canary61CybersecurityDenver, United States$90.0M
Seemplicity61EnterpriseTel Aviv, Israel$182.0M
Sygnia60EnterpriseTel Aviv, Israel$4.3M
Seven AI60EnterpriseBoston, United States$166.0M
MIND Security58Data SecurityTel Aviv, Israel$71.0M
Token Security57EnterpriseSan Francisco, United States$27.0M
Savvy57EnterpriseSan Francisco, United States$30.0M
Authomize57CybersecurityTel Aviv, Israel$42.0M
Reveal Security56EnterpriseTel Aviv, Israel$16.0M
Cymphony Security55EnterpriseSan Francisco, United States
Zest Security55CybersecurityTel Aviv, Israel$5.0M
Trustdome55CybersecurityTel Aviv, Israel
Huskeys55CybersecuritySan Francisco, United States$8.0M
SCADAfence54EnterpriseTel Aviv, Israel$26.0M
Tenex54CybersecuritySan Francisco, USA$277.0M
AtmoSec54CybersecurityTel Aviv, Israel$6.0M
Seraphic Security54EnterpriseTel Aviv, Israel$29.0M
Spera54CybersecuritySan Francisco, United States$10.0M
Mesh Security53EnterpriseSan Francisco, United States$4.5M
Quilr51Agentic AISan Francisco, United States$4.0M
Aryon Security50CybersecurityTel Aviv, Israel$38.0M
Cyata Security49EnterpriseTel Aviv, Israel$8.5M
Ent AI48CybersecuritySan Francisco, United States$112.0M
Tencycle46EnterpriseTel Aviv, Israel
Tope AI45CybersecuritySan Francisco, United States
Vigilant AI45CybersecuritySan Francisco, United States$740K
Realm Security44CybersecuritySan Francisco, United States$18.0M
LuminAI Security43EnterpriseSan Francisco, United States
HUB Security43EnterpriseTel Aviv, Israel$21.0M
Venafi42CybersecuritySalt Lake City, United States$292.2M
| Company | Sector | HQ | Funding | Score |
|---|---|---|---|---|
| SUSublime Security | Cybersecurity | San Francisco, United States | $191.0M | 55 |
| SentinelOne | Cybersecurity | Mountain View, United States | $799.5M | 76 |
| Malwarebytes | Cybersecurity | Santa Clara, United States | $180.0M | 58 |
| Veriti | Enterprise | San Francisco, United States | $28.0M | 56 |
| Panorays | Cybersecurity | New York, United States | $62.0M | 52 |
| Orion Security | Enterprise | San Francisco, United States | $6.0M | 49 |
| Onyxia | Enterprise | Tel Aviv, Israel | $5.0M | 47 |
| Cyvore Security | Enterprise | Tel Aviv, Israel | — | 47 |
| CYNC Secure | Enterprise | San Francisco, United States | — | 47 |
| Acre Security | Physical Security | Austin, USA | $63.0M | 45 |
| Canonic Security | Enterprise | Tel Aviv, Israel | $6.0M | 45 |
| PAPando Cyber Security | Cybersecurity | Tel Aviv, Israel | $10.0M | 42 |
| Stride Security | Enterprise | San Francisco, United States | — | 35 |
| CyberArk Software | Cybersecurity | Newton, United States | $1.9B | 30 |
| CISOtronix | Enterprise | — | — | 30 |
| Controlsecurity | Cybersecurity | Tel Aviv, Israel | $1.5M | 18 |
| Aemetis | Climate Tech | Cupertino, United States | — | 15 |
| MCMcAfee | Cybersecurity | San Jose, United States | — | 14 |
| Armis Security | Enterprise | San Carlos, United States | $847.0M | 85 |
| Check Point Software | Cybersecurity | Tel Aviv, Israel | $1.5B | 72 |
| At-Bay | InsurTech | New York, United States | $292.0M | 70 |
| Silverfort | Enterprise | Boston, United States | $222.5M | 69 |
| Zero Networks | Cybersecurity | Tel Aviv, Israel | $100.0M | 67 |
| Duo Security | Authentication | Ann Arbor, United States | — | 66 |
| Perception Point | Enterprise | Tel Aviv, Israel | $38.0M | 65 |
| Reco Labs | Data | Tel Aviv, Israel | $123.0M | 65 |
| Zafran Security | Enterprise | Tel Aviv, Israel | $130.0M | 64 |
| Grip Security | Cybersecurity | Tel Aviv, Israel | $66.0M | 64 |
| Cisco Duo | Cybersecurity | Ann Arbor, United States | $107.0M | 63 |
| Adaptive Shield | Cybersecurity | Tel Aviv, Israel | $10.0M | 62 |
| Red Canary | Cybersecurity | Denver, United States | $90.0M | 61 |
| Seemplicity | Enterprise | Tel Aviv, Israel | $182.0M | 61 |
| Sygnia | Enterprise | Tel Aviv, Israel | $4.3M | 60 |
| Seven AI | Enterprise | Boston, United States | $166.0M | 60 |
| MIND Security | Data Security | Tel Aviv, Israel | $71.0M | 58 |
| Token Security | Enterprise | San Francisco, United States | $27.0M | 57 |
| Savvy | Enterprise | San Francisco, United States | $30.0M | 57 |
| Authomize | Cybersecurity | Tel Aviv, Israel | $42.0M | 57 |
| Reveal Security | Enterprise | Tel Aviv, Israel | $16.0M | 56 |
| Cymphony Security | Enterprise | San Francisco, United States | — | 55 |
| Zest Security | Cybersecurity | Tel Aviv, Israel | $5.0M | 55 |
| Trustdome | Cybersecurity | Tel Aviv, Israel | — | 55 |
| Huskeys | Cybersecurity | San Francisco, United States | $8.0M | 55 |
| SCADAfence | Enterprise | Tel Aviv, Israel | $26.0M | 54 |
| Tenex | Cybersecurity | San Francisco, USA | $277.0M | 54 |
| AtmoSec | Cybersecurity | Tel Aviv, Israel | $6.0M | 54 |
| Seraphic Security | Enterprise | Tel Aviv, Israel | $29.0M | 54 |
| Spera | Cybersecurity | San Francisco, United States | $10.0M | 54 |
| Mesh Security | Enterprise | San Francisco, United States | $4.5M | 53 |
| Quilr | Agentic AI | San Francisco, United States | $4.0M | 51 |
| Aryon Security | Cybersecurity | Tel Aviv, Israel | $38.0M | 50 |
| Cyata Security | Enterprise | Tel Aviv, Israel | $8.5M | 49 |
| Ent AI | Cybersecurity | San Francisco, United States | $112.0M | 48 |
| Tencycle | Enterprise | Tel Aviv, Israel | — | 46 |
| Tope AI | Cybersecurity | San Francisco, United States | — | 45 |
| Vigilant AI | Cybersecurity | San Francisco, United States | $740K | 45 |
| Realm Security | Cybersecurity | San Francisco, United States | $18.0M | 44 |
| LuminAI Security | Enterprise | San Francisco, United States | — | 43 |
| HUB Security | Enterprise | Tel Aviv, Israel | $21.0M | 43 |
| Venafi | Cybersecurity | Salt Lake City, United States | $292.2M | 42 |