Signal
Phishing campaigns increasingly exploit legitimate email services for sophisticated attacks
Evidence first: scan the strongest sources, then decide whether to go deeper.
Published 2026-05-04 10:00 UTCUpdated 2026-05-04 15:00 UTC
rss
phishingemail_securitycredential_theftsocial_engineeringcloud_security
Source links open
Source links and full evidence are open here. Archive history, compare-over-time, alerts, exports, API, integrations, and workflow are paid.
No card needed for the free brief.
Evidence trail (top sources)
top sources (2 domains)domains are deduped. counts indicate coverage, not truth.2 top sources shown
limited source diversity in top sources
Overview
Recent phishing campaigns have demonstrated growing sophistication by leveraging legitimate email infrastructure to bypass security measures.
Entities
MicrosoftAmazonKasperskyMicrosoft DefenderRoman Dedenok
Score total
0.98
Momentum 24h
2
Posts
2
Origins
2
Source types
1
Duplicate ratio
0%
Why now
- Recent campaigns show increased use of legitimate infrastructure for phishing.
- Attackers refine tactics to evade evolving security controls.
- Awareness is critical as these methods target large user populations globally.
Why it matters
- Phishing attacks leveraging trusted email services are harder to detect and block.
- Multi-stage social engineering increases the likelihood of credential theft.
- Abuse of cloud email platforms like Amazon SES challenges existing email security protocols.
LLM analysis
Topic mix: lowPromo risk: lowSource quality: high
Recurring claims
- Phishing campaigns are increasingly using legitimate email services to bypass security controls.
- Attackers use multi-stage social engineering and polished email templates to increase phishing credibility and evade detection.
- Amazon SES is abused by attackers to send authenticated phishing emails that pass SPF, DKIM, and DMARC checks, making detection difficult.
How sources frame it
- Microsoft Defender Security Research Team: neutral
- Roman Dedenok / Kaspersky Securelist: neutral
This briefing highlights the growing trend of phishing campaigns exploiting legitimate email services and sophisticated social engineering to bypass security controls and steal credentials.
All evidence
All evidence
Breaking the code: Multi-stage ‘code of conduct’ phishing campaign leads to AiTM token compromise
Microsoft Security Blog · microsoft.com · 2026-05-04 15:00 UTC
“Legitimate” phishing: how attackers weaponize Amazon SES to bypass email security
Securelist (Kaspersky) · securelist.com · 2026-05-04 10:00 UTC
Show filters & breakdown
Posts loaded: 0Publishers: 2Origin domains: 2Duplicates: -
Showing 2 / 0
Top publishers (this list)
- Microsoft Security Blog (1)
- Securelist (Kaspersky) (1)
Top origin domains (this list)
- microsoft.com (1)
- securelist.com (1)