Abnormal Security

VS

Nessus

Cybersecurity Comparison

Abnormal Security vs Nessus: Side-by-Side Comparison

Abnormal Security
Nessus
Rating
★★★★★★★★★★
4.7/5
★★★★★★★★★★
4.6/5
Free Tier
No
Yes
Trial Days
None
7-day trial
Pricing
Pricing based on mailboxes; contact sales for enterprise quote
Nessus Essentials free; Professional from $3,990/yr per scanner
Company
Abnormal Security Corporation
Tenable
Founded
2019
1998
Best For
Organizations wanting API-based email security stopping zero-day BEC attacks autonomously
Vulnerability management teams needing the most comprehensive CVE scan coverage

Pros & Cons

200 Jobs AI Will Replace
FREE REPORT

200 Jobs AI Will Replace

Is yours on the list? 52% of workers are already worried. Find out where your career stands before it's too late.

We respect your privacy. Unsubscribe anytime.

Abnormal Security

API-based deployment requires no MX record change and deploys in under 30 minutes
Behavioral AI models normal communication patterns per employee then detects deviations
Stops novel BEC attacks with no known indicators that signature tools miss entirely
Attack timeline view reconstructs entire campaign showing attacker reconnaissance steps
Autonomous remediation removes threats from inboxes without analyst intervention needed
API-only model means no on-premise or gateway deployment option available
Newer company with less track record than established players like Proofpoint

Nessus

Over 170,000 plugins covering the most vulnerability checks of any scanner
Compliance audits check configurations against CIS, DISA STIG, and PCI DSS
Agentless scanning requires no software installed on target systems
Nessus Essentials is free for up to 16 IP addresses for learning use
Plugin update frequency averages less than 24 hours for new CVE coverage
Essentials free tier limited to 16 IPs making it impractical for real networks
False positives require manual verification before presenting to clients

Use Case Analysis

Which is better for Endpoint Security?

Both Abnormal Security and Nessus support Endpoint Security workflows. Abnormal Security has a slight edge with a 4.7 rating and Behavioral baseline per employee catches novel BEC with zero signatures required. If Endpoint Security is your primary use case, Abnormal Security is the safer pick.

Which is better for Antivirus?

Both Abnormal Security and Nessus support Antivirus workflows. Abnormal Security has a slight edge with a 4.7 rating and Behavioral baseline per employee catches novel BEC with zero signatures required. If Antivirus is your primary use case, Abnormal Security is the safer pick.

Which is better for Privacy?

Both Abnormal Security and Nessus support Privacy workflows. Abnormal Security has a slight edge with a 4.7 rating and Behavioral baseline per employee catches novel BEC with zero signatures required. If Privacy is your primary use case, Abnormal Security is the safer pick.

Which is better for Encryption?

Both Abnormal Security and Nessus support Encryption workflows. Abnormal Security has a slight edge with a 4.7 rating and Behavioral baseline per employee catches novel BEC with zero signatures required. If Encryption is your primary use case, Abnormal Security is the safer pick.

Which is better for Two Factor Authentication?

Both Abnormal Security and Nessus support Two Factor Authentication workflows. Abnormal Security has a slight edge with a 4.7 rating and Behavioral baseline per employee catches novel BEC with zero signatures required. If Two Factor Authentication is your primary use case, Abnormal Security is the safer pick.

Verdict

Abnormal Security edges out Nessus with a 4.7 vs 4.6 rating. Abnormal Security's main advantage: Behavioral baseline per employee catches novel BEC with zero signatures required. That said, Nessus may still be the better choice if Vulnerability management teams needing the most comprehensive CVE scan coverage.

Try Them Yourself

The best way to choose is to trial both. See full details on each:

Visit Abnormal Try Nessus

Related Comparisons

Abnormal Security vs Cloudflare Abnormal Security vs Palo Alto Networks Abnormal Security vs Fortinet Abnormal Security vs ESET
200 Jobs AI Will Replace - Is yours on the list? 52% of workers are already worried. Find out where your career stands before it's too late.