No specific threat detected
Legitimate Microsoft Safe Links infrastructure domain that rewrites and scans email URLs for safety.
Is apc01.safelinks.protection.outlook.com legit or a scam?
Legitimate Microsoft Safe Links infrastructure domain that rewrites and scans email URLs for safety.
This is a legitimate Microsoft Safe Links URL used by Outlook and Defender for Office 365 to scan email links before they open. The domain itself is not malicious.
Analysis Summary
Website Preview
Automated page render — captured in a safe sandbox. What an ordinary visitor would see when loading the site.
Visual analysis
We capture a fresh screenshot of the live page and ask a vision model to look for scam visual patterns — fake trust badges, countdown timers, overlay pop-ups, and visual clones of legitimate brands.
Visual similarities noted — cleared by the overall checks
Our vision model noted some visual similarity to a known brand, but the domain, security records, and reputation checks confirm this is the legitimate site — so this is shown for transparency, not as a red flag.
What our vision model saw
1 signalScreenshot incomplete — site may be slow to render
Intelligence
The domain apc01.safelinks.protection.outlook.com belongs to Microsoft and has been registered since 1994. Zero antivirus engines flagged it, browser blocklists show it clean, and the hosting IP carries no abuse history. The page title 'Review document' and the destination URL point to DocuSign, which is a common legitimate workflow. The single scam mention in the evidence package actually describes attackers abusing Safe Links in phishing emails, not the domain itself being malicious. This infrastructure is designed to protect users, not harm them.
Web Research Findings
Independent findings for apc01.safelinks.protection.outlook.com, including public complaints, named review sources, registration records, and look-alike-domain evidence. A missing result is shown as unverified, never converted into a clean bill of health.
- apc01.safelinks.protection.outlook.com is a legitimate Microsoft infrastructure domain.
- It is part of the 'Safe Links' feature within Microsoft Defender for Office 365, which automatically rewrites URLs in incoming emails to protect users from malicious sites.
- The domain itself does not host content; it acts as a proxy/redirector that scans destination URLs at the time of click.
- Attackers frequently abuse this service by sending phishing emails that contain legitimate-looking 'Safe Links' URLs, which then redirect victims to malicious credential-harvesting sites.
- Users should be cautious of any email containing a 'Review Document' or 'Upgrade Now' link, even if the link appears to originate from Microsoft's protection service.
- Microsoft Q&Aopen
"I receive many scam emails every day on my business email from people posing as Microsoft... UPGRADE NOW <https://apc01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fcathedralgreatfool.co.za..."
The domain is a legitimate Microsoft infrastructure component (Microsoft Defender for Office 365 / Safe Links).
Evidence shows one mention on Microsoft Q&A describing attackers sending phishing emails that contain Safe Links URLs pointing to malicious sites. The post does not report the domain as malicious. No scam reports, complaints, or negative reviews were found about apc01.safelinks.protection.outlook.com itself.
Domain Timeline
- Aug 18, 1994Domain registered
First appeared in WHOIS records — 32 years old today.
- Jul 22, 2026Latest security review — Reviewed as safe
This scan re-ran every check and found no active threat signals.
apc01.safelinks.protection.outlook.com has operated for years with no threat signals in this review — a long, stable track record, though it is never a guarantee on its own.
Threat Detection
Antivirus Engines
Security Scans
Checked against the major public blocklists used by browsers and security tools — no hits.
Reputation Sources
How this domain rates across independent threat-intelligence and blocklist providers.
Technical Details
domain · encryption · redirects · server reputation · referencedThe plumbing behind the site — who registered it, how it’s encrypted, where it’s hosted, and where it links out. A valid certificate or a calm server doesn’t mean the business is honest — scam sites pass these checks too. Use this to corroborate the verdict, not to overturn it.
Contact Verification
We fetched the page and looked for real-world contact details. Legitimate businesses almost always publish an email on their own domain, a phone number, and a postal address. Scam shops usually don't.
- No contact email found anywhere on the page.
- No phone number listed on the page.
- No postal address visible on the page.
Domain & Encryption
Server Reputation
Referenced Domains
Outbound domains this page links to or loads resources from. Each links to its own security scan.
What to do
Still, stay alert
No major threat indicators — but a clean scan does not guarantee every page is safe, and phishing emails routinely spoof real domains.
- Double-check the exact URL in your address bar
Confirm you are actually on apc01.safelinks.protection.outlook.com and not a lookalike like a-pc01.safelinks.protection.outlook.com.com or an IDN homoglyph.
- Use a password manager
Password managers only auto-fill on the exact domain they were saved for — they refuse to fill lookalike domains, which is the single best phishing defence.
- OpenDiscuss this site on the forum
If you have first-hand experience with this site — good or bad — share it with the MalwareTips community.
Final Verdict
This is a legitimate Microsoft Safe Links URL used by Outlook and Defender for Office 365 to scan email links before they open. The domain itself is not malicious.
Safety FAQ
Common questions, answered directly from the scan data above — so the answers always reflect the latest verdict on this page.
- Our automated security review found no threat indicators on apc01.safelinks.protection.outlook.com, so it appears legitimate. All 92 antivirus engines we queried report it clean, and the domain is 31.9 years old, registered on August 18, 1994 — established domains are far less likely to be scams. Even so, always double-check the exact address in your browser, because phishing emails routinely spoof real, trusted domains like this one.
- apc01.safelinks.protection.outlook.com passed our automated checks with a trust score of 94/100. No antivirus engines or major blacklists flagged it at the time of the last scan, and its signals line up with an established, legitimate site. Treat any unexpected login prompt or payment request on it with the same caution you would anywhere.
- Yes — and this is worth understanding. Even trustworthy domains get spoofed in phishing emails (a fake message that only looks like it's from apc01.safelinks.protection.outlook.com), and legitimate sites are occasionally compromised on specific pages. A clean verdict means the site itself checks out today; it does not mean every email or link claiming to be from apc01.safelinks.protection.outlook.com is genuine. Always reach the site by typing the address yourself rather than clicking links in unexpected messages.
- No — all 92 antivirus and blocklist engines in our malware network currently report apc01.safelinks.protection.outlook.com as clean. That's a good sign, though antivirus coverage is only one of the many signals we weigh, and brand-new scam sites can appear clean before vendors catch up.
- No — apc01.safelinks.protection.outlook.com is not currently on the major browser blocklist feeds that Chrome, Safari, Firefox, and Edge rely on. Note that blocklists can lag behind brand-new scam domains, so "not listed" is reassuring but not a guarantee on its own.
- apc01.safelinks.protection.outlook.com is 31.9 years old, registered on August 18, 1994 through MarkMonitor Inc.. A multi-year registration history is one of the stronger signals against a scam, though it's never a guarantee on its own — established domains can still be misused.
- Yes — apc01.safelinks.protection.outlook.com presents a valid TLSv1.3 certificate issued by Microsoft Corporation · Microsoft TLS G2 RSA CA OCSP 04, valid for another 128 days. Important caveat: SSL only encrypts the connection between you and the site — it does not verify who runs it. Almost all scam sites now have valid SSL too, so a padlock alone never means "safe".
- apc01.safelinks.protection.outlook.com resolves to an IP operated by Microsoft Corporation in US (Data Center/Web Hosting/Transit). Hosting location alone doesn't make a site good or bad — but hosting that doesn't match a brand's claimed country, or that sits on networks known for abuse, is one of the many signals we weigh alongside the verdict above.
- This report is a record of the scan run on July 22, 2026, and the verdict reflects that point in time. Scam sites change fast — they can go live, get flagged, or vanish within days — so if you believe something about apc01.safelinks.protection.outlook.com has changed, MalwareTips staff can run a fresh scan that re-checks every signal from scratch and republishes an updated verdict.
User reviews & comments(0)
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