Skip to content
Product
Use it
Threat intelligence API
Free key, 70+ endpoints, OpenAPI. The product.
Get started
Pick your stack, make your first call.
Live feed
The console: incidents, filters, entities, search.
Recipes
Runnable examples for the free key.
Free feeds
RSS, ransomware feed, IOC blocklist, MISP — no key.
CLI & agents
tc from a terminal; agent keys with scoped budgets.
The data
Incident records
900 articles a day become ~70 scored incidents.
Dark web
First-party leak-site collection: victims, groups, markets.
Validated IOCs
Indicators with a false-positive gate; STIX, MISP, CSV.
Vulnerabilities
CVEs with EPSS, KEV and exploit status.
Entity graph
Actors, malware, CVEs, companies — pivotable.
For teams
For service providers
Per-client feeds, alerts and branded digests.
Use cases
How teams and builders use the corpus.
About ThreatCluster
What it is and how it is built.
Pricing
Docs
Reference
OpenAPI (Swagger)
Every endpoint, parameter and response model.
ReDoc
The same reference, long-form.
Examples on GitHub
curl, Python and Node quickstarts; daily spec snapshot.
Guides
Quickstart & plans
Key, scopes, budgets, tiers.
Integrations
Splunk, Sentinel, Elastic, agents and terminals, step by step
Export formats
STIX 2.1, MISP, CSV, text.
CLI setup
Install, log in, wire an agent.
No results found
Sign in
Get a free key
No results found
Product
Threat intelligence API
Get started
Live feed
Recipes
Free feeds
CLI & agents
The data
Incident records
Dark web
Validated IOCs
Vulnerabilities
Entity graph
For teams
For service providers
Use cases
About ThreatCluster
Docs
OpenAPI (Swagger)
ReDoc
Examples on GitHub
Quickstart & plans
Integrations
Export formats
CLI setup
Pricing
Contact
Get a free key
Sign in
Back
ShieldBreak
Vulnerability
Threat entity extracted from intelligence sources
Entities
›
vulnerability
›
ShieldBreak
Frequency
16
occurrences
First Seen
August 12, 2026
Last Seen
September 22, 2026
API
Overview
Recent Events
Profile
Profile
MITRE ATT&CK
1 / 2
Exploited By
Nightmare Eclipse
Associated Malware
BigDiskBuster
Tools Used
Cloud Files API
Cloud Filter API
Google Chrome
TieringEngineService
Windows Defender API
Related CVEs
CVE-2026-50656
CVE-2026-69414
CVE-2026-33825
CVE-2026-45585
CVE-2026-45586
CVE-2026-45498
CVE-2026-41091
CVE-2026-55040
MITRE Techniques
T1068 - Exploitation for Privilege Escalation
T1055 - Process Injection
T1566 - Phishing
T1003 - OS Credential Dumping
T1053 - Scheduled Task/Job
T1059 - Command and Scripting Interpreter
T1190 - Exploit Public-Facing Application
Affected Platforms
Windows
Microsoft Defender
Windows Server 2025
BitLocker
Windows Defender
Kaspersky Endpoint Security
-
REC
Recon
No techniques detected
-
RD
Resource Dev
No techniques detected
2
IA
Initial Access
T1566 - Phishing
T1190 - Exploit Public-Facing Application
2
EX
Execution
T1053 - Scheduled Task/Job
T1059 - Command and Scripting Interpreter
-
PE
Persistence
No techniques detected
2
PE
Priv Esc
T1068 - Exploitation for Privilege Escalation
T1055 - Process Injection
-
DE
Defense Evasion
No techniques detected
1
CA
Cred Access
T1003 - OS Credential Dumping
-
DI
Discovery
No techniques detected
-
LM
Lateral Mov
No techniques detected
-
CO
Collection
No techniques detected
-
C2
C2
No techniques detected
-
EX
Exfil
No techniques detected
-
IM
Impact
No techniques detected
7
techniques detected across
4
tactics
Related Clusters (4)
New Windows Zero-Day 'ShieldBreak' Exploits Microsoft Defender Flaw
Aug 12
·
34 sources
70
ShieldCrash Exploit Targets Microsoft Malware Protection Engine
Sep 13
·
2 sources
67
Windows Defender Crashes Following Security Update Fix for ShieldBreak Vulnerability
Aug 19
·
10 sources
58
New BigDiskBuster Zero-Day Blocks Microsoft Defender Updates
Sep 22
·
7 sources
55
Related Articles (16)
New Microsoft Defender Zero
Linkedin
·
Sep 22
New Windows Defender zero-day blocks Microsoft antivirus updates
Bleepingcomputer
·
Sep 22
ShieldCrash Exposes the Endpoint-Protection Plane as Microsoft's Latest Attack Surface
Tech.Yahoo
·
Sep 13
September 2026 Patch Tuesday forecast: All we need is more time
Helpnetsecurity
·
Sep 4
Researcher Releases FalconFlank PoC Showing Privilege Escalation in CrowdStrike Falcon
Thehackernews
·
Sep 3
Nightmare Eclipse Drops ‘HardBreacher’ Kaspersky Product Exploit
Feeds.Feedburner
·
Aug 31
Microsoft Defender scans break after ShieldBreak zero
Feeds.4Sysops
·
Aug 19
README.md
git.projectnightcrawler.dev
·
Aug 14
Researcher bypasses Microsoft Defender security patch, seizing control
Csoonline
·
Aug 12
Microsoft
Theregister
·
Aug 12
Microsoft
Theregister
·
Aug 12
Disgruntled Researcher Discloses New Zero-Day in Windows Antivirus
Uk.Pcmag
·
Aug 12
Security Researcher Reveals ShieldBreak Windows Defender Zero
Mezha
·
Aug 12
After Microsoft threatened legal action, a security researcher publishes a new Windows zero
Techcrunch
·
Aug 12
ShieldBreak Windows Defender 0
Gbhackers
·
Aug 12
New Microsoft Defender 'ShieldBreak' zero
Bleepingcomputer
·
Aug 12
Prev
1 / 4
Next
Related Entities
Nightmare Eclipse
Zero-day Exploit
Phishing
Microsoft
CrowdStrike
Kaspersky
Mozilla
Thomson Reuters
CVE-2026-50656
CVE-2026-69414
CVE-2026-33825
CVE-2026-45585
