David Barton’s Post

In today’s digital age, the massive cellular outage impacting AT&T, T-Mobile, and Verizon users underscores a critical lesson: the necessity for robust security training and infrastructure resilience. This incident, as reported by Reuters, highlights how even the largest networks are vulnerable to single points of failure, with no backup services to mitigate the disruption. It’s a stark reminder of the importance of designing systems that can withstand failures and protect users. Let’s take this as a call to action to prioritize comprehensive training for our security engineers and invest in building more resilient infrastructures. #cloudsecurity #corporatetraining #InfrastructureResilience https://lnkd.in/eR7yzXsk

RADIUS is used a lot more than you think. This vulnerability turns out it's related to MD5. Something we knew has been insecure for *a long time*. "New Blast-RADIUS attack breaks 30-year-old protocol used in networks everywhere" More here: https://lnkd.in/ejR5KwDT

What is the impact on First Orion, Hiya Inc. and Transaction Network Services? The implications for this could be that the analytics engines that support major carriers (such as AT&T, T-Mobile, and Verizon) may be forced to provide special treatment for all non-A attested calls, which could mean that all of those calls automatically receive a call label such as "Caution" or "Spam". https://lnkd.in/e_vtzW73

TL;DR: AT&T apologizes for network disruption, service restored. FBI and DHS investigate possible cyberattack. FCC involved, public safety impacted. Verizon and T-Mobile networks unaffected. AT&T focused on preventing future incidents and enhancing network resilience. 1. #ATandT 2. #networkrecovery #Technology #UncrownedAddiction

Rolling your own MD5 hash authentication was a bad idea. "More than 12 years after Flame's devastating damage was discovered and two decades after collision susceptibility was confirmed, MD5 has felled yet another widely deployed technology that has resisted common wisdom to move away from the hashing scheme—the RADIUS protocol, which is supported in hardware or software provided by at least 86 distinct vendors. The result is “Blast RADIUS,” a complex attack that allows an attacker with an active adversary-in-the-middle position to gain administrator access to devices that use RADIUS to authenticate themselves to a server." https://lnkd.in/gCucRfQq

Let's fire up the way back machine and dial it up to back in 2018, millions of people in the United Kingdom, Europe, and Japan lost cell phone service (no phone calls, no texts, no internet!). The cause? An expired certificate associated with Ericsson’s network. Most of us don’t manage certificates that have quite that level of impact, but an expired certificate is no laughing matter:  74% of organizations have had certificate-related outages in the past year.  The average Enterprise loses $11.1 million annually due to certificate expirations. Reputation and brand damage add additional costs. TLS Protect, part of the Venafi Control Plane for Machine Identities, is a comprehensive, cloud-based solution that seamlessly discovers and monitors TLS certificates. That means no more certificates getting lost in lists or between the lines of unruly spreadsheets! This system streamlines the management of the entire TLS certificate lifecycle, automating workflows across your enterprise infrastructure. Its sole mission: to eliminate application, service and security infrastructure outages caused by mismanaged TLS certificates. https://lnkd.in/e-UC8m7B

If you need assistance with the #Crowdstrike issue or if you just want to understand alternatives to #Crowdstrike then reach out to me and we can get you the assistance you need.

It is easy, popular, and strangely common to attribute random network outages, service interruptions, or other issues to #MaliciousActors, especially #NationStateActors. And while I'll never tell you that it can't be or won't be them, I will tell you that it is at least as common for these things to be any of several other possibilities: - DNS - BGP - Under-tested new code - That one remaining piece of hardware that has no redundancy - Hardware that is supported by redundancy but the redundant hardware doesn't engage - The instructions were wrong or improperly followed As a person who took a company's network down by installing a redundant supervisor card in the core switch without knowing the power supply couldn't handle the load, and who dumped a DNS hidden master by improperly incrementing the serial number, I've lived several of these scenarios. So before you jump to a conclusion that an outage has a malicious source, ask a couple of questions: 1. What possible benefit would come of this for a malicious actor? 2. Would a Nation State do this "bad thing" without doing other noticable bad things? 3. Did I double check the routing tables?

Threat Advisory *CRITICAL* - CrowdStrike Causing Widespread Global Outages An update pushed out by CrowdStrike within the past 12 hours has caused widespread outages to Windows environments where CrowdStrike is installed. This was not an elective update and therefore was applied to every end-point that had internet connectivity, at the time. The impact of this update caused the infamous Blue Screen of Death (BSOD) and will require manual intervention on every device. Millions of endpoints globally were rendered inoperable, ranging from the 3 largest airlines, delaying flights, hospital networks, government agencies, and news networks. Any endpoint with CrowdStrike installed with internet connectivity within the past 12 hours is likely affected. Please read the full Threat Advisory for more details and recommendations: https://lnkd.in/gx3Eh8bh

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