Doing some statistics on the persistence of information published on security and threat intelligence blogs. A surprising number of the domains in the list below are NXDOMAIN nowadays. Don't assume that security information and threat intelligence will remain accessible over time, especially when it is hosted by large private entities. Some are simply mistyped, while others reflect DNS changes over time that eventually left the original URLs broken. Stability and persistence of information is hard on Internet. #threatintelligence #threatintel #infosec #cybersecurity app.response.ncr.com blog.0x3a.com blog.anomali.com blog.cert.societegenerale.com blog.cylance.com blog.deniable.org blog.ioactive.com blog.jpcert.or.jp blog.kleissner.org blog.malwareclipboard.com blog.malwaretracker.com blog.passivetotal.org blog.safebit.mn blog.team-cymru.org blog.zimperium.com blogs.rsa.com cdn.securelist.com community.saas.hpe.com ddos.arbornetworks.com dnsdb.isc.org edu.arabsgate.com info.baesystemsdetica.com info.isightpartners.com insider.domaintools.com ioc.forensicartifacts.com iranthreats.github.i joedd.joesecurity.org lab.anchiva.com labs.alienvault.com labs.lastline.com labs.snort.org labsblog.f-secure.com luminosity.link malware.sekoia.fr morphick.net motherboard.vice.com ocelot.li permalink.gmane.org r.virscan.org remchp.com research.riskiq.net resources.infosecinstitute.com sandbox.deepviz.com sec.sexy securityblog.s21sec.com securityblog.switch.ch securitydaily.org sub0day.com tif.mcafee.com wepawet.iseclab.org www.cve.mitre.org www.cyintanalysis.com www.cyphort.com www.icebrg.io www.infosecdailynews.com www.isightpartners.com www.lexsi.com www.novetta.com www.packetmail.net www.root9b.com www.skycure.com www.threatexpert.com www.vxsecurity.sg