fierce

Fierce Fierce is a DNS reconnaissance tool for locating non-contiguous IP space. Useful links: Domain Name System DNS Domain Names - Concepts and Facilities Domain Names - Implementation and Specification Threat Analysis of the Domain Name System DNS Name Servers NS State of Authority Record SOA...

CVE-2025-2691

Versions of the package nossrf before 1.0.4 are vulnerable to Server-Side Request Forgery SSRF where an attacker can provide a hostname that resolves to a local or reserved IP address space and bypass the SSRF protection mechanism...

OSINT your OT suppliers

There is much talk about supply chain security and reviewing your suppliers for cyber security. But how much information do they intentionally and unintentionally leak about your organisation online? We see this particularly in the industrial controls sector as its cyber security maturity is...

What tracking an attacker email infrastructure tells us about persistent cybercriminal operations

From March to December 2020, we tracked segments of a dynamically generated email infrastructure that attackers used to send more than a million emails per month, distributing at least seven distinct malware families in dozens of campaigns using a variety of phishing lures and tactics. These...

DNS reconnaissance tool: Fierce

Fierce is a DNS reconnaissance tool for locating non-contiguous IP space Fierce is a semi-lightweight scanner that helps locate non-contiguous IP space and hostnames against specified domains. It’s really meant as a pre-cursor to nmap, unicornscan, nessus, nikto, etc, since all of those require...

Attackers Buying Own Data Centers for Botnets, Spam

The malware writers and criminals who run botnets for years have been using shared hosting platforms and so-called bulletproof hosting providers as bases of operations for their online crimes. But, as law enforcement agencies and security experts have moved to take these providers offline, the...