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The exploitation of Microsoft SharePoint vulnerabilities by Chinese hackers is a near-exact re-run of the 2021 Microsoft Exchange server mass compromise event. 

The 2021 incident elicited a strong international diplomatic response, but this SharePoint saga makes it clear these efforts failed to deter China from embarking on a similarly damaging campaign again, four years later. A different, bigger picture, approach is needed. 

In both cases:

The FBI has seized around $2.4 million worth of Bitcoin from the relatively new Chaos ransomware group.

According to the US Justice Department, the funds were seized back in April, but only now announced. The funds were taken from a crypto-wallet owned by a Chaos member going by the name of Hors.

This seizure is interesting for one very particular reason—namely, that the Chaos ransomware is a new group. We have rarely seen the FBI crack down and go after a group within months of its launch.

Security researchers have managed to recover and mirror the vast majority of exploits stored in 0day.today, a notorious old-school exploits database that went down earlier this year.

The site is not the go-to portal to get your exploits these days, but it has a historical and educational value to the infosec community, storing PoCs and exploits for some of the internet's oldest bugs.

At the time it went down, it was hosting more than 38,000 exploits dating back almost two decades before a mysterious incident took it out for months.

Microsoft has released this week a new Entra security feature designed to help incident responders track down compromised accounts and malicious activity across organizations.

The new feature is named Linkable Identifiers, sometimes also referred to as Linkable Token Identifiers in some of the Microsoft documentation pages—because, of course, anything Microsoft has to also be confusing.

It is a newly designed mechanism that generates multiple unique identifiers that are embedded inside user access tokens after users authenticate via Entra ID.

Over the past weekend, Microsoft disclosed a zero-day vulnerability that was being exploited in the wild against its SharePoint servers.

Since then, there have been dozens of reports published on the same attacks, and details have come at us from different sources, with varying degrees of information, depending on what was available at the time of each report.

Below, I've tried to gather and simplify all the major points about this attack, so we have a clear picture of what's what. Tbh, I'm doing this more for myself than my readers, since I've also kind of lost track of all the reporting surrounding this topic.

The number of public SMS blasting incidents has slowly increased over the past year, in a clear sign of a rising problem.

SMS blasters are devices that mimic a mobile base station to trick nearby phones into connecting to them. They are a variation of IMSI catchers (aka cell-site simulators, fake base stations, or stingrays), but instead of intercepting mobile traffic to snoop on a target and track their location, SMS blasters are designed to automatically send SMS messages to all users trapped in the fake base station's coverage.

The devices have been used to mass-spam mobile devices over the past decade, typically at organized events, such as concerts, political rallies, or other mass gatherings, and for silly marketing purposes.

At least one cybercrime group is using a new phishing technique that bypasses FIDO keys and grants attackers access to user accounts.

The new technique has been used in the wild by a threat actor known as PoisonSeed.

Earlier this year, the group was involved in phishing campaigns targeting the cryptocurrency community and designed to steal assets from their crypto-wallets.

Recent reporting that the Spanish government had awarded  €12.3 million to Huawei to manage storage for the government's lawful intercept (LI) system struck us as a terrible idea. 

Digging a bit deeper, it turns out the truth is more understandable but far worse. These contracts were awarded over the last few years and were a continuation of an existing arrangement. Huawei has been involved in Spain's lawful intercept (LI) system since 2004. 

It is time to rip the bandaid off. 

Microsoft has added a new security feature to Windows 11 that will mitigate an entire class of filesystem redirection attacks.

The new RedirectionGuard feature is currently under testing in Windows 11 Insider builds.

It works by blocking a type of file redirection known as a junction, or a soft link. This allows users to create a link between two folders, so when users or processes access that folder, they get automatically redirected to the target directory somewhere else on the same system.

More than 12 years after the issue was first reported, the Association of American Railroads is replacing an insecure railroad protocol that can be abused to engage brakes and bring trains to sudden stops anywhere across North America.

The issue impacts a radio protocol that links locomotives (Head-of-Train) to devices mounted on the last wagon, a flashing red light known in the industry as an End-of-Train device or a FRED (Flashing Red End Device).

This device is primarily used to collect telemetry from the back of trains. It is useful especially for long freight trains that can often go over one or two miles in length and which cannot be easily inspected.