GreyNoise unveils Recall & real‑time blocklists 🌐 | CISA warns on publicly available attack tools 🛡️

Hello, here's your daily cybersecurity and AI threat intelligence roundup for January 30, 2026.

Today's headlines

• GreyNoise launches Recall, a time‑series intelligence layer for GNQL queries.
• New real‑time blocklist feature helps SMBs stop attackers instantly.
• GreyNoise adds CVE disclosure early‑warning based on traffic spikes.
• CISA publishes a report on publicly available tools used in global incidents.

1️⃣ Recall: Time‑Series Intelligence for GNQL

Key Points:

• Adds historical context to IP reputation data.
• Enables trend analysis directly in GNQL queries.
• Improves threat hunting efficiency for analysts.

Description:

GreyNoise introduced Recall, a new time‑series intelligence capability that enriches the GreyNoise Query Language (GNQL) with historical traffic patterns, allowing security teams to see how IP reputation evolves over time and spot emerging threats faster.

Why It Matters:

Understanding temporal trends in malicious activity helps organizations prioritize alerts, reduce false positives, and accelerate incident response, especially in fast‑moving attack campaigns.

2️⃣ Real‑Time Blocklists for SMBs

Key Points:

• Fully configurable blocklists update instantly.
• Designed for small and mid‑sized business firewalls.
• Integrates with major SIEM and SOAR platforms.

Description:

GreyNoise expanded its platform with real‑time, fully configurable blocklists that automatically block malicious IPs as they are identified, providing a lightweight yet powerful defense layer for small and mid‑sized enterprises.

Why It Matters:

SMBs often lack deep security staffing; automated blocklists reduce exposure to mass‑scanner noise and active threats without requiring extensive manual rule creation.

 3️⃣ CVE Disclosure Early Warning

Key Points:

• Monitors traffic spikes linked to new CVE exploits.
• Provides alerts before public exploit code surfaces.
• Helps prioritize patching based on real‑world activity.

Description:

GreyNoise added an early‑warning service that detects anomalous traffic surges associated with newly disclosed vulnerabilities, alerting customers to active exploitation attempts before they become widespread.

Why It Matters:

Early detection of exploit activity allows organizations to fast‑track remediation, lowering the window of exposure for high‑risk vulnerabilities.

 4️⃣ Compromised Asset Detection Integration

Key Points:

• Instantly flags assets communicating with malicious IPs.
• Provides contextual intelligence for incident investigations.
• Supports automated responses via SOAR playbooks.

Description:

GreyNoise introduced a compromised asset detection feature that notifies defenders when internal hosts contact known malicious IP addresses, supplying enrichment data to streamline investigations.

Why It Matters:

Rapid identification of compromised assets reduces dwell time, limits lateral movement, and improves overall incident response efficiency.

 5️⃣ CISA Report on Publicly Available Attack Tools

Key Points:

• Highlights five tools frequently used in recent incidents.
• Analyzes tool impact across health, finance, government sectors.
• Offers mitigation guidance for organizations worldwide.

Description:

The Cybersecurity and Infrastructure Security Agency (CISA) released a collaborative report cataloguing publicly available tools that have been leveraged in cyber incidents globally, emphasizing their accessibility to a wide range of threat actors.

Why It Matters:

Understanding the prevalence of off‑the‑shelf tools helps defenders anticipate attack vectors, strengthen defenses, and prioritize security controls against commonly exploited utilities.

 6️⃣ Five Tool Categories Detailed by CISA

Key Points:

• Covers Remote Access Trojans, webshells, credential stealers, lateral movement frameworks, and C2 obfuscators.
• Describes typical usage stages for each category.
• Provides actionable detection and response recommendations.

Description:

Within the same CISA advisory, the agency breaks down the identified tools into five categories—Remote Access Trojans, webshells, credential stealers, lateral movement frameworks, and command‑and‑control obfuscators—detailing how each is employed post‑compromise.

Why It Matters:

Categorizing tools enables security teams to map detection rules and threat‑intel feeds more precisely, improving the ability to spot and mitigate multi‑stage attacks.

Stay vigilant and keep your defenses updated.