# GreyNoise Block: Fully configurable, real-time blocklists vs iCOUNTER CTOS: side-by-side comparison (2026) [GreyNoise Block: Fully configurable, real-time blocklists](https://cybersectools.com/tools/greynoise-block-fully-configurable-real-time-blocklists) is a commercial [threat intel platforms](https://cybersectools.com/categories/tip) solution by [GreyNoise, Inc](https://cybersectools.com/companies/greynoise-inc). [iCOUNTER CTOS](https://cybersectools.com/tools/icounter-ctos) is a commercial [threat intel platforms](https://cybersectools.com/categories/tip) solution by [iCOUNTER](https://cybersectools.com/companies/icounter). Features, integrations, deployment and the company behind each one, side by side. Need the answer fast? [Best Threat Intelligence Platform Solutions for Business](https://cybersectools.com/shortlists/best-threat-intelligence-platforms) picks Recorded Future Threat Intelligence, Google Threat Intelligence, CrowdStrike Falcon Adversary Intelligence and 4 more. ## Side-by-side comparison | | GreyNoise Block: Fully configurable, real-time blocklists | iCOUNTER CTOS | |---|---|---| | Pricing model | Commercial | Commercial | | Category | Threat Intel Platforms | Threat Intel Platforms | | Verified | No | No | | Deployment type | Cloud | Cloud | | Company size fit | SMB, Mid-Market, Enterprise | Mid-Market, Enterprise | | Company | GreyNoise, Inc. | iCOUNTER | | Headquarters | – | – | ### Use cases and capabilities | | GreyNoise Block: Fully configurable, real-time blocklists | iCOUNTER CTOS | |---|---|---| | Botnet | Yes | – | | IP Address | Yes | – | | Cyber Threat Intelligence | Yes | Yes | | Third Party Security | – | Yes | | APT | – | Yes | | Threat Actors | – | Yes | | IOC | – | Yes | | Threat Analysis | – | Yes | | Vulnerability Intelligence | – | Yes | | Supply Chain Security | – | Yes | | Threat Feed | – | Yes | ### Core features **GreyNoise Block: Fully configurable, real-time blocklists** 10 features listed. Sign in on the page to see them. **iCOUNTER CTOS** 5 features listed. Sign in on the page to see them. ### Integrations **GreyNoise Block: Fully configurable, real-time blocklists** 50 integrations listed. Sign in on the page to see them. **iCOUNTER CTOS** 1 integration listed. Sign in on the page to see them. ## Which one fits you Based on what each listing shows: deployment, company size, price and open source. - [GreyNoise Block: Fully configurable, real-time blocklists](https://cybersectools.com/tools/greynoise-block-fully-configurable-real-time-blocklists) fits if you are a small business. ## GreyNoise Block: Fully configurable, real-time blocklists vs iCOUNTER CTOS FAQ Common questions when comparing GreyNoise Block: Fully configurable, real-time blocklists vs iCOUNTER CTOS for threat intel platforms. ### What is the difference between GreyNoise Block: Fully configurable, real-time blocklists and iCOUNTER CTOS? **GreyNoise Block: Fully configurable, real-time blocklists**: Detects compromised assets via outbound traffic to GreyNoise sensors & malicious IPs. Built by GreyNoise, Inc. **iCOUNTER CTOS**: Threat intel & TPRM platform detecting adversary intent before exploitation. Built by iCOUNTER. The table above shows where their features, integrations, deployment and company size fit differ. ### Who makes GreyNoise Block: Fully configurable, real-time blocklists and iCOUNTER CTOS? **GreyNoise Block: Fully configurable, real-time blocklists** is made by GreyNoise, Inc. **iCOUNTER CTOS** is made by iCOUNTER. The vendor behind a product decides its roadmap, support, and longevity, so check each company's profile before you commit. ### Is GreyNoise Block: Fully configurable, real-time blocklists a good alternative to iCOUNTER CTOS? Often, yes. GreyNoise Block: Fully configurable, real-time blocklists and iCOUNTER CTOS are both Threat Intel Platforms products, and both cover Cyber Threat Intelligence. Use the table above to see where features, deployment and company size fit differ. ## Related comparisons - [GreyNoise Block: Fully configurable, real-time blocklists vs Cytellite Threat Intelligence](https://cybersectools.com/compare/cytellite-threat-intelligence-vs-greynoise-block-fully-configurable-real-time-blocklists) - [GreyNoise Block: Fully configurable, real-time blocklists vs Cypho](https://cybersectools.com/compare/cypho-vs-greynoise-block-fully-configurable-real-time-blocklists) - [GreyNoise Block: Fully configurable, real-time blocklists vs Loginsoft VuInerability Intelligence LOVI](https://cybersectools.com/compare/greynoise-block-fully-configurable-real-time-blocklists-vs-lovi) - [iCOUNTER CTOS vs Cytellite Threat Intelligence](https://cybersectools.com/compare/cytellite-threat-intelligence-vs-icounter-ctos) - [iCOUNTER CTOS vs Cypho](https://cybersectools.com/compare/cypho-vs-icounter-ctos) - [iCOUNTER CTOS vs Loginsoft VuInerability Intelligence LOVI](https://cybersectools.com/compare/icounter-ctos-vs-lovi) ## Alternatives to each - [See all GreyNoise Block: Fully configurable, real-time blocklists alternatives](https://cybersectools.com/alternatives/greynoise-block-fully-configurable-real-time-blocklists) - [See all iCOUNTER CTOS alternatives](https://cybersectools.com/alternatives/icounter-ctos) --- Source: https://cybersectools.com/compare/greynoise-block-fully-configurable-real-time-blocklists-vs-icounter-ctos For AI agents: each product above has its own Markdown page (add .md to its URL, for example https://cybersectools.com/tools/greynoise-block-fully-configurable-real-time-blocklists.md). Every CybersecTools shortlist is listed at https://cybersectools.com/shortlists.md. More on GreyNoise Block: Fully configurable, real-time blocklists and iCOUNTER CTOS: funding, momentum, hiring and news, plus the full product and company record, are available through the Mandos MCP Server (paid plans), which connects to AI assistants: https://mandos.io/mcp?utm_source=cybersectools.com&utm_medium=compare-md