Mark Collier (@markcollier46) 's Twitter Profile
Mark Collier

@markcollier46

CTO at SecureLogix. Wrote second book - Hacking Exposed: UC/VoIP. Married. 4 daughters

ID: 50756744

linkhttp://www.securelogix.com calendar_today25-06-2009 20:20:01

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FBI (@fbi) 's Twitter Profile Photo

Telephony denial-of-service attacks against emergency call centers can prevent callers from reaching 911 dispatchers. Protect your family by contacting your local emergency services before an emergency to learn how to request service during 911 outages. ow.ly/IuUA50DD6pp

Telephony denial-of-service attacks against emergency call centers can prevent callers from reaching 911 dispatchers. Protect your family by contacting your local emergency services before an emergency to learn how to request service during 911 outages. ow.ly/IuUA50DD6pp
Mark Collier (@markcollier46) 's Twitter Profile Photo

I am reposting this article/bulletin, describing TDoS attacks against 9-1-1. These attacks have been increasing, with conferencing of call takers across PSAPs in different states. If anyone encounters such an attack, feel free to contact me: threatpost.com/tdos-attacks-e…

Mark Collier (@markcollier46) 's Twitter Profile Photo

Here is some info about a recent award to SecureLogix from DHS Science and Technology (S&T) and DHS CISA Emergency Communications Division (ECD) to enhance our solutions to address NG9-1-1 multimedia security and how to support the EC3 concept: newswise.com/articles/dhs-a…

Greg Vail (@gregvail85) 's Twitter Profile Photo

If you are going to purchase any of my books (paperback), please do from doublesuited.net The proceeds from the sales there go directly to me rather than 65% to Amazon, Bezos, and his dick rockets. Yes, 65%. They raised their % again. Thieves. RTs greatly appreciated

Mark Collier (@markcollier46) 's Twitter Profile Photo

Collaboration tools, such as Teams, can increase robocalls and Telephony Denial of Service (TDoS) issues in enterprises. thefastmode.com/expert-opinion…

Mark Collier (@markcollier46) 's Twitter Profile Photo

Robocaller fined for launching Telephony Denial of Service (TDoS) attacks against other robocallers. Not smart. lawstreetmedia.com/news/tech/fcc-…

Mark Collier (@markcollier46) 's Twitter Profile Photo

Enterprises are still struggling with communications and voice security. SecureLogix can help: nojitter.com/security/colla…

Mark Collier (@markcollier46) 's Twitter Profile Photo

Several universities across the country were targets of a SWATting attack, claiming there was an active shooter on campus. SWATting calls have been around for years, but with calling number spoofing and easy generation of audio (possibly with GenAI): apnews.com/article/active…

Mark Collier (@markcollier46) 's Twitter Profile Photo

The FCC is cracking down on 1200 service providers who are not doing an adequate job in mitigating robocalls: cyberscoop.com/fcc-robocall-a…

Mark Collier (@markcollier46) 's Twitter Profile Photo

FTC and consumers trying to fight the threat of AI voice cloning/Audio Deepfakes. This is and will become a significant threat: advocacy.consumerreports.org/press_release/…

Mark Collier (@markcollier46) 's Twitter Profile Photo

The USSS traced locations in NYC , with robust SIM Box Servers, positioned to disrupt cellular comms in that area. These servers can disrupt 911, other public safety, cellular as a whole, and send SWATting/active shooter/misdirection calls and texts. lnkd.in/gMza4H6a

Mark Collier (@markcollier46) 's Twitter Profile Photo

Be especially careful over the holidays, of Account Take Over (ATO), phishing, and vishing attempts, from what appear to be well-known retailers. malwarebytes.com/blog/news/2025…