⚠️ #SW_ISAC_ADVISORY

The following domain will be added to the IFTAS Abandoned/Unmanaged List with a "Silence" (aka "Limit") recommendation on Mon Jun 8, 2026

zirk.us

Although there are a number of authentic accounts active, the service is overrun by a known botnet. Reports and repeated attempts to contact the service operators since Apr 10 have gone unanswered, the admin account has not been seen since Jan 2025.

ref: https://docs.joinmastodon.org/entities/Admin_DomainBlock/#severity

https://fedi.wrm.sr/instance/zirk.us

https://zirk.us/public/local

Admin::DomainBlock - Mastodon documentation

Represents a domain limited from federating.

⚠️ #SW_ISAC_ADVISORY

The following domains have been added to the IFTAS Abandoned/Unmanaged Domain Denylist

closednetwork.social
mstdn.at
paxation.info
sigmoid.social

Notes: open registration; no authentic human activity on timeline; overrun with FIMI bot posting; DMs, Emails and all outreach unresponsive for three weeks or more.

#SPAM #FIMI #CIB #Disinformation

https://about.iftas.org/library/iftas-abandoned-and-unmanaged-domain-list/

⚠️ #SW_ISAC_ADVISORY

The following domain(s) are entering the IFTAS Abandoned/Unmanaged Domain (AUD) review process:

mstdn.at
paxation.info
sigmoid.social
zirk.us

These nodes are open registration, are being used by coordinated botnets, and are unresponsive to reports, DMs, and Email communications.

If you have contacts at any of these services, please reach out and let them know we have been trying to contact them for three weeks.

#Spam #FIMI #CIB

https://about.iftas.org/library/iftas-abandoned-and-unmanaged-domain-list/

⚠️ #SW_ISAC_ADVISORY

The following domain has been added to the IFTAS Abandoned/Unmanaged Domain Denylist

802.3ether.net

Notes: Dedicated spam operation generating 1,800+ daily posts to drive traffic to an adware-laden ad farm (yna.co.kr).

See https://about.iftas.org/library/known-spam-fediverse-services/ for more information on known spam services.

⚠️ #SW_ISAC_ADVISORY

The following domain(s) are entering the IFTAS Abandoned/Unmanaged Domain (AUD) review process:

mastodon[.]economiasocial[.]org

Over the past weeks we have reported a cluster of automated spam accounts and reached out to the admin via DM with no response, the listed email contact is non-functional.

Learn more about our process: https://about.iftas.org/library/iftas-abandoned-and-unmanaged-domain-list/

IFTAS Abandoned and Unmanaged Domain (AUD) Denylist

About this denylist The Abandoned and Unmanaged list is an IFTAS-curated list of domains that are highly recommended for defederation or limited delivery. Each domain is labelled using a share…

IFTAS

⚠️ #SW_ISAC_Advisory

The IFTAS Do Not Interact domain denylist has been updated.

Recent additions have been identified as federating illegal content such as #CSAM and #TVEC based on human review.

If your service imports the IFTAS DNI denylist, please update accordingly.

https://about.iftas.org/library/iftas-dni-list/

⚠️ #SW_ISAC_ADVISORY

The following domain has been added to the IFTAS Abandoned/Unmanaged Domain Denylist

social.sengeis.priv.at

Service uses outdated v4.0.2 Mastodon, and hosts only inauthentic bots. No admin account or contact details are published.

#Spam #CIB #Disinformation #FIMI

⚠️ #SW_ISAC_ADVISORY

The following domain has been added to the IFTAS Abandoned/Unmanaged List

computational.agency

Service uses outdated v3.3.0 Mastodon, and hosts only inauthentic bots. No admin details or contact details are published.

https://about.iftas.org/library/iftas-abandoned-and-unmanaged-domain-list/

#Spam #CIB #FIMI

⚠️ #SW_ISAC_ADVISORY

Previously-federating domain

chinanews[.]social

is no longer an ActivityPub service, and is now serving auto-downloaded malware.

Last observed federation was 2026-01-29

Database purge of cached posts may be appropriate to reduce serving links to this exposed domain.

#Malware

⚠️ #SW_ISAC_ADVISORY

The following domain(s) are being escalated to the Abandoned/Unmanaged Denylist (AUD) review process:

sigmoid.social

#CIB #FIMI #Spam

More about AUD: https://about.iftas.org/library/iftas-abandoned-and-unmanaged-domain-list/