Passive DNS

4 min read

• DNS
• DNS Security
• DNS Tunneling
• Passive DNS
• PDNS
• Protective DNS

DNS Tunneling Surges as Iranians Seek to Bypass Internet Restrictions

Threat Stop March 3, 2026

Periods of geopolitical tension rarely stay confined to borders....

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3 min read

• DNS
• DNS Security
• Passive DNS
• PDNS
• Protective DNS

Expanding Active Malware Protection Across Domains and IPs

Threat Stop January 8, 2026

ThreatSTOP continues to expand proactive protection coverage with new...

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3 min read

• DNS
• DNS Security
• Passive DNS
• PDNS
• Protective DNS

Strengthening Your Network Against Malicious Advertising Services

Threat Stop November 17, 2025

Online advertising is an essential part of the digital...

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3 min read

• DNS
• DNS Security
• Passive DNS
• PDNS
• Protective DNS

2025 State of Threat Intelligence: Why ThreatSTOP Is the Power Move for Proactive Protection

Threat Stop November 13, 2025

The 2025 State of Threat Intelligence report from Recorded...

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3 min read

• DNS
• DNS Security
• Passive DNS
• PDNS
• Protective DNS

Detecting the Unseen: How ThreatSTOP Identifies and Neutralizes Dynamic DNS Abuse

Threat Stop November 6, 2025

Dynamic DNS, or DDNS, was created to make the...

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5 min read

• DNS
• DNS Security
• Passive DNS
• PDNS
• Protective DNS
• Threat Intelligence

Improvements to ThreatSTOP Detection and Retention – October 2025

Threat Stop October 30, 2025

At ThreatSTOP, our mission is to provide continuous, proactive...

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3 min read

• DNS
• DNS Security
• Passive DNS
• PDNS
• Protective DNS

Cisco Tightens Umbrella Control — Why Customers Are Making the Switch

Threat Stop October 22, 2025

Cisco’s recent changes to its Umbrella platform have left...

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4 min read

• DNS
• DNS Security
• Passive DNS
• PDNS
• Protective DNS

From “Nice-to-Have” to “Must-Have”: NIST and CISA Cement Protective DNS as a Security Standard

Threat Stop September 29, 2025

For years, Protective DNS was treated as an optional...

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9 min read

• DNS
• DNS Security
• Malware
• Passive DNS
• PDNS
• Protective DNS

Skin in the Game: How a Fake Dota 2 Mod Stole More Than Cosmetics

Threat Stop September 5, 2025

We recently observed a sudden 165% spike in DNS...

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3 min read

• DNS
• DNS Security
• Machine Learning
• Passive DNS
• PDNS
• Protective DNS

The Simplest Science Behind Domain Similarity

Threat Stop September 2, 2025

When attackers try to fool you, they often start...

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