Is u108265739.ct.sendgrid.net safe?

http://u108265739.ct.sendgrid.net/

High RiskStatus

Coveragecomplete3 of 4 applicable core capabilities

Verdict

SendGrid tracking subdomain abused in Microsoft 365 phishing chain

u108265739.ct.sendgrid.net is a legitimate SendGrid click-tracking subdomain that was observed as the first hop in a multi-stage redirect chain leading to a fake Microsoft 365 login page. The specific tracking link is now returning a 404 error, indicating the campaign has ended, but the domain remains a known vector for credential-harvesting attacks.

Treat any unsolicited email containing links to this subdomain or similar SendGrid tracking domains with extreme caution. Do not click links or enter credentials if redirected to a Microsoft login page.
Read full analysis
Calibrated safety spectrum

Where this site sits

  1. Dangerous1–20
  2. High Risk21–44
  3. Moderate Risk45–69
  4. Low Risk70–84
  5. Safe85–100

The score combines saved evidence strength and analysis quality. Coverage is reported separately.

01 · Investigation Brief

Investigation Brief

u108265739.ct.sendgrid.net is a legitimate SendGrid click-tracking subdomain that was observed as the first hop in a multi-stage redirect chain leading to a fake Microsoft 365 login page. The specific tracking link is now returning a 404 error, indicating the campaign has ended, but the domain remains a known vector for credential-harvesting attacks.

Observed redirect path

Security researchers documented the subdomain routing visitors through mauthcopilot.com and then to a fake Microsoft 365 sign-in page hosted on portalmyadminsigninapps.experiencewithreliability.de.

Current availability

The URL now returns a 404 Not Found response, showing the specific tracking link or campaign path is no longer active.

Why the score is 25

Documented use as first hop in AITM phishing campaign targeting Microsoft 365 credentials. Coverage remains separate so missing sources cannot be mistaken for clean results.

02 · Security Evidence

Security evidence

Collected signals and independent provider data for this URL.

Antivirus Engines

0/ 92

No detections

Fresh result

No detections across 92 engines

No antivirus engine in this saved scan raised an adverse result. This is one signal, not a guarantee.

Malicious
0
Suspicious
0
Total
92
All 92 engine results
  • 0xSI_f33d - unrated - Clean
  • Abusix - clean - Clean
  • Acronis - clean - Clean
  • ADMINUSLabs - clean - Clean
  • AILabs (MONITORAPP) - clean - Clean
  • AlienVault - clean - Clean
  • alphaMountain.ai - clean - Clean
  • AlphaSOC - clean - Clean
  • Antiy-AVL - clean - Clean
  • ArcSight Threat Intelligence - unrated - Clean
  • AutoShun - unrated - Clean
  • Bfore.Ai PreCrime - unrated - Clean
  • BitDefender - clean - Clean
  • Bkav - unrated - Clean
  • BlockList - clean - Clean
  • Blueliv - clean - Clean
  • Certego - clean - Clean
  • ChainPatrol - unrated - Clean
  • Chong Lua Dao - clean - Clean
  • CINS Army - clean - Clean
  • Cluster25 - unrated - Clean
  • CRDF - clean - Clean
  • Criminal IP - unrated - Clean
  • CSIS Security Group - unrated - Clean
  • CTX AI - clean - Clean
  • Cyan - unrated - Clean
  • Cyble - clean - Clean
  • CyRadar - clean - Clean
  • desenmascara.me - clean - Clean
  • DNS8 - unrated - Clean
  • Dr.Web - clean - Clean
  • EmergingThreats - clean - Clean
  • Emsisoft - clean - Clean
  • Ermes - unrated - Clean
  • ESET - clean - Clean
  • ESTsecurity - clean - Clean
  • Forcepoint ThreatSeeker - clean - Clean
  • Fortinet - clean - Clean
  • Fortra - unrated - Clean
  • G-Data - clean - Clean
  • GCP Abuse Intelligence - unrated - Clean
  • Google Safe Browsing - clean - Clean
  • GreenSnow - clean - Clean
  • GreyNoise - unrated - Clean
  • Gridinsoft - unrated - Clean
  • Guardpot - unrated - Clean
  • Heimdal Security - clean - Clean
  • Hunt.io Intelligence - unrated - Clean
  • IPsum - clean - Clean
  • Juniper Networks - clean - Clean
  • K7AntiVirus - unrated - Clean
  • Kaspersky - unrated - Clean
  • LevelBlue - clean - Clean
  • Lionic - clean - Clean
  • Lumu - unrated - Clean
  • Malwared - clean - Clean
  • MalwarePatrol - clean - Clean
  • MalwareURL - unrated - Clean
  • Mimecast - unrated - Clean
  • Netcraft - unrated - Clean
  • OpenPhish - clean - Clean
  • PhishFort - unrated - Clean
  • Phishing Database - clean - Clean
  • Phishtank - clean - Clean
  • PREBYTES - clean - Clean
  • PrecisionSec - unrated - Clean
  • Quick Heal - clean - Clean
  • Quttera - clean - Clean
  • Rising - clean - Clean
  • SafeToOpen - unrated - Clean
  • Sangfor - clean - Clean
  • Sansec eComscan - unrated - Clean
  • Scantitan - clean - Clean
  • SCUMWARE.org - clean - Clean
  • Seclookup - clean - Clean
  • Snort IP sample list - unrated - Clean
  • SOCRadar - unrated - Clean
  • Sophos - clean - Clean
  • StopForumSpam - clean - Clean
  • Sucuri SiteCheck - clean - Clean
  • ThreatHive - clean - Clean
  • URLhaus - clean - Clean
  • URLQuery - unrated - Clean
  • Viettel Threat Intelligence - clean - Clean
  • VIPRE - unrated - Clean
  • ViriBack - clean - Clean
  • VX Vault - clean - Clean
  • Webroot - clean - Clean
  • Xcitium Verdict Cloud - unrated - Clean
  • Yandex Safebrowsing - clean - Clean
  • ZeroCERT - clean - Clean
  • ZeroFox - unrated - Clean

Security Scans

Browser Threat Feed
Not flagged on major threat lists

Checked against the browser threat feeds available to this scan — no hit.

What we observed

CAPTURED PAGE
u108265739.ct.sendgrid.net
What our review noticed on this page
Visual analysis

Visual context from the captured page

404 Not Found

Context only

What the captured page showed

1 observation
  1. 01

    404 Not Found

03 · Investigation Story

Investigation story

The behavior, reputation, and operator evidence that explains how this site may affect a visitor.
  1. What the site claims

    No page claim could be verified for u108265739.ct.sendgrid.net because no usable page content or saved capture was available.

  2. What we observed

    Saved browser evidence recorded cross domain landing.

  3. What independent research found

    2 external findings were saved and compared with the page evidence.

  4. What remains unverified

    1 of the 4 applicable core capabilities did not complete, so those gaps remain visible in the coverage ledger.

What kind of site and risk is this?

Threat category

Phishing & Impersonation

Service and business model

Unknown

Unknown

Observed behavior

Cross Domain Landing

Evidence behind this classification

  1. 01Documented use as first hop in AITM phishing campaign targeting Microsoft 365 credentials

Web research findings

Independent findings for u108265739.ct.sendgrid.net, 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.

Business registration
No public record found
Could not match the site to a registered company — common for small sites.
Clone check
No clone detected
The completed research found no supported clone indicator.
Typosquat check
No look-alike match
The completed research found no supported look-alike match.
Web mentions
1 scam report
Scam reports (1)
Direct quotes from public scam databases, forums, and news.
  • TrendAI Securityopen

    "u108265739[.]ct[.]sendgrid[.]net → mauthcopilot[.]com → portalmyadminsigninapps.experiencewithreliability[.]de/0xrcY/ → fake Microsoft 365 sign-in page"

Reputation Sources

How this domain rates across independent threat-intelligence and blocklist providers.

Google Safe Browsing
Not listedCheck ↗
VirusTotal
Not listedCheck ↗
AbuseIPDB
Not listedCheck ↗

04 · Domain & Infrastructure

Domain & infrastructure

Timeline · identity · encryption · redirects · hosting

The 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.

Infrastructure map

How the saved page connected to the wider web.

  1. Domainu108265739.ct.sendgrid.net
  2. Redirects tou108265739.ct.sendgrid.net
  3. Hosted byAmazon Data Services Northern Virginia

Domain Timeline

  1. Apr 20, 2009
    Domain registered

    First appeared in WHOIS records — 17 years old today.

  2. Aug 24, 2026
    Saved security review — Flagged as suspicious

    The completed checks from this saved scan are detailed above.

u108265739.ct.sendgrid.net is an established domain now carrying threat signals. An older domain that starts tripping security checks is a classic pattern for an asset that was sold, repurposed, or compromised — the age alone is not reassurance.

Domain & Encryption

Domain History
Age17 years old
RegistrarMarkMonitor Inc.
RegisteredApr 20, 2009
ExpiresApr 20, 2027
Owner privacyUnknown
Encryption Certificate
StatusInvalid
Protocolnone
IssuerNone
ExpiresInvalid Date (0d)
Self-signedNo
Hosting & Technology
HostingAmazon Data Services Northern Virginia
Server locationUS

Server Reputation

Abuse Intelligence
Confidence score0%
Reports on file2
ISPAmazon Data Services Northern Virginia
Usage typeData Center/Web Hosting/Transit

05 · Evidence Ledger

Evidence ledger

Coverage, provenance, and source freshness remain separate so a missing check is never mistaken for a clean result.
  1. Antiviruscomplete
  2. Browser threat feedcomplete
  3. Page contentpartial
  4. Analysiscomplete
  5. Visual evidencecomplete
Completed analysis

The conclusion is supported by the evidence saved with this report.

Technical threat

unknown

Malware, phishing, credential theft and hostile infrastructure.

No confirmed evidence in this dimension.

Operator / customer risk

suspicious

Complaints, withdrawals, business conduct and commercial traps.

Additional evidence review

Source coverage and freshness

Status shows whether usable evidence was saved; finding shows what that evidence observed.

Antivirus
Result0 of 92 engines flagged
CompletionCompleted
FindingNo adverse finding
Freshnessfresh · Aug 24, 2026
Browser protection
ResultNo browser threat-list match
CompletionCompleted
FindingNo adverse finding
FreshnessNot available
Page content
ResultPage content was not available for semantic review
CompletionLimited
FindingNo saved finding
FreshnessNot available
Visual evidence
Result1 visible observation saved with the page capture
CompletionCompleted
FindingNo adverse finding
FreshnessNot available
Independent research
Result2 independent findings were saved
CompletionCompleted
FindingAdverse
FreshnessNot available

06 · Your Next Move

Your next move

Proceed with caution

Our automated review flagged enough risk that you should treat this site as unverified.

  1. Analyst recommendation

    Treat any unsolicited email containing links to this subdomain or similar SendGrid tracking domains with extreme caution. Do not click links or enter credentials if redirected to a Microsoft login page.

  2. Treat u108265739.ct.sendgrid.net as unverified

    Do not enter credentials or send money until you have independently verified the business.

  3. Verify the business through independent channels

    Check the company's social profiles, registry records, and search for recent news or reviews that are not hosted on the site itself.

  4. Never use irreversible payment methods

    Crypto, gift cards, wire transfers, and cash apps offer zero buyer protection. Use a credit card or PayPal if you must pay.

  5. Share your experience

    If you have additional context, drop a comment below or post on the MalwareTips forum.

    Open

07 · Safety FAQ

Safety FAQ

Common questions, answered directly from the scan data above — so the answers reflect the saved verdict and evidence in this report.

Is u108265739.ct.sendgrid.net a scam or a legit website?
u108265739.ct.sendgrid.net looks like a likely phishing & impersonation — do not enter your login or personal details. The domain is 17.4 years old through MarkMonitor Inc.. It may not be an outright scam, but the risk is high enough that you should verify it independently before trusting it with money or data.
Is u108265739.ct.sendgrid.net safe to use?
u108265739.ct.sendgrid.net has a Safety Score of 25/100 (High Risk). Analysis coverage is complete at 100%. Avoid login, payment and downloads.
What should I do if I already gave my details to u108265739.ct.sendgrid.net?
If you've already paid or handed over details on u108265739.ct.sendgrid.net, act quickly. 1) Contact your bank or card issuer immediately and ask to dispute the charge or open a chargeback — the sooner you act, the better your odds. 2) Report the site to the U.S. FTC at reportfraud.ftc.gov or the FBI's IC3 at ic3.gov, and in the UK to Action Fraud at actionfraud.police.uk. 3) If you entered a password, change it on u108265739.ct.sendgrid.net and anywhere you reused it, and turn on two-factor authentication. 4) Watch your bank and email for follow-up fraud, and keep screenshots as evidence.
Can I get my money back from u108265739.ct.sendgrid.net?
Often yes, if you act fast. Payments made by credit or debit card can frequently be reversed through a chargeback or dispute — contact your bank right away and explain it was a fraudulent site. Bank transfers and gift-card or voucher payments are much harder to recover, but you should still report them to your bank and to the FTC (reportfraud.ftc.gov) or Action Fraud (actionfraud.police.uk). Avoid any "refund" or "recovery" service that contacts you first — it's usually a follow-up scam.
Did u108265739.ct.sendgrid.net steal my password or personal information?
If you entered anything on u108265739.ct.sendgrid.net, assume it was captured. Phishing pages exist purely to harvest what you type — usernames, passwords, card numbers, or one-time codes. Change the password immediately on the real site and anywhere you reused it, enable two-factor authentication, and if you entered card or banking details, contact your bank about the risk of fraud. Also be alert for follow-up "security" calls or emails that try to exploit the same information.
How do I report u108265739.ct.sendgrid.net?
You can report u108265739.ct.sendgrid.net through several official channels: the U.S. FTC at reportfraud.ftc.gov, the FBI's Internet Crime Complaint Center (IC3) at ic3.gov, and — in the UK — Action Fraud at actionfraud.police.uk. You can also flag it to Google Safe Browsing (safebrowsing.google.com/safebrowsing/report_phish) so other browsers warn about it, and report it to the company being impersonated if there is one. Reporting helps get scam sites taken down faster.
Why does u108265739.ct.sendgrid.net look legitimate if it's a scam?
Modern scams are built to look convincing. A valid SSL padlock, a polished template, stock photos, fake reviews, and a trust badge can all be added in minutes and prove nothing about who runs the site. Scammers buy cheap domains, clone real designs, and copy legal pages wholesale. That's exactly why an automated review that checks the domain's age, hosting, blacklists, and behaviour — rather than just how the page looks — is more reliable than a first impression.
Has u108265739.ct.sendgrid.net been flagged by antivirus engines?
No — all 92 antivirus and blocklist engines in our malware network currently report u108265739.ct.sendgrid.net 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.
Is u108265739.ct.sendgrid.net on any phishing or malware blacklists?
No — u108265739.ct.sendgrid.net 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.
How old is the u108265739.ct.sendgrid.net domain?
u108265739.ct.sendgrid.net is 17.4 years old, registered on April 20, 2009 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.
Does u108265739.ct.sendgrid.net have a valid SSL certificate?
No — u108265739.ct.sendgrid.net has an invalid or broken SSL certificate, so browsers will show a security warning. Combined with the other signals, we recommend avoiding it.
How often is the u108265739.ct.sendgrid.net report updated?
This report is a record of the scan run on August 24, 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 u108265739.ct.sendgrid.net has changed, MalwareTips staff can run a fresh scan that re-checks every signal from scratch and republishes an updated verdict.

08 · Final Verdict

Final verdict

The saved conclusion, decisive evidence, and practical action in one final view.
Verdict score
25/100
High Risk

SendGrid tracking subdomain abused in Microsoft 365 phishing chain

Saved captureu108265739.ct.sendgrid.netCapture-safe
Captured during this scan. Opening this report does not revisit the site.
Conclusion

u108265739.ct.sendgrid.net is a legitimate SendGrid click-tracking subdomain that was observed as the first hop in a multi-stage redirect chain leading to a fake Microsoft 365 login page. The specific tracking link is now returning a 404 error, indicating the campaign has ended, but the domain remains a known vector for credential-harvesting attacks.

Recommended actionTreat any unsolicited email containing links to this subdomain or similar SendGrid tracking domains with extreme caution. Do not click links or enter credentials if redirected to a Microsoft login page.
Saved evidence only

Missing checks are never treated as a clean result.

Scan another URL
Continue toCommunity

09 · Community

Community

First-hand experiences add human context after the scanner has reached its conclusion.