Verified Confidence: high
Primary source found; it says the same thing, the scope matches, and it is reasonably current.
Safe rephrasing
Cloudflare Email Security classified an average of 5.6% of the messages it analyzed in 2025 as malicious.
What the source says
In 2025, an average of 5.6% of emails analyzed by Cloudflare were found to be malicious .
Cloudflare Radar — Cloudflare Radar 2025 Year in Review
- Commonly cited as
- "How much email is malicious?"
- True origin
- Cloudflare Radar — Cloudflare Radar 2025 Year in Review
- Type
- Reference fact: A frequently needed number or rule taken directly from a primary source (e.g. Pew, Census, IAB/PwC, FTC), with its as-of date.
- Year
- 2025
- Data as of
- 2025 (year to date, through early December)
- Last checked
- Method & sample
- Messages processed by Cloudflare Email Security (business customers), 2025.
- Drift between quote and source
- Sample is Cloudflare Email Security customers' inbound mail, not all email
- Interest
- Cloudflare sells network and security services.