Latest cybersecurity reporting from selected sources.

Your attack surface no longer lives on one operating system, and neither do the campaigns targeting it. In enterprise environments, attackers move across Windows endpoints, executive MacBooks, Linux infrastructure, and mobile devices, taking advantage of the fact that many SOC workflows are still fragmented by platform.  For security leaders, this creates a

Ivanti's Endpoint Manager Mobile Flaws Under Active ExploitationThe European Commission fell victim to a cyberattack that could have allowed the theft of some staff personal information. The European Union's executive body said Friday it detected on Jan. 30 an attack on its "central infrastructure managing mobile devices."

Customers in parts of Wisconsin and Michigan could not make calls or send text messages for nearly a week after an incident on May 14, and service is still intermittent in some areas.

Wisconsin wireless provider Cellcom has confirmed that a cyberattack is responsible for the widespread service outage and disruptions that began on the evening of May 14, 2025. [...]

South Korean mobile provider SK Telecom has announced free SIM card replacements to its 25 million mobile customers following a recent USIM data breach, but only 6 million cards are available through May. [...]

African mobile giant MTN Group announced that a cybersecurity incident has compromised the personal information of some of its subscribers in certain countries. [...]

PLUS: India's new electronics subsidies; Philippines unplugs a mobile carrier; Alibaba Cloud expands Asia In Brief Chinese officials admitted to directing cyberattacks on US infrastructure at a meeting with their American counterparts, according to The Wall Street Journal.…

Ukrzaliznytsia, Ukraine's national railway operator, has been hit by a massive cyberattack that disrupted online services for buying tickets both through mobile apps and the website. [...]

Funny what putting more effort and resources into IT security can do Attackers - possibly China's Salt Typhoon cyber-espionage crew - compromised an unnamed wireline provider's network and used this access to try to break into T-Mobile US systems multiple times over the past few weeks, according to its Chief Security Officer Jeff Simon. …

Healthcare organizations should rethink some of their approach to security, enhancing focus on insider threats, improving cyber awareness training and securing mobile applications and devices, said Ryan Witt, vice president of industry solutions at Proofpoint, discussing findings of a new study.

Cybersecurity researchers have flagged multiple in-the-wild exploit campaigns that leveraged now-patched flaws in Apple Safari and Google Chrome browsers to infect mobile users with information-stealing malware

Mobile medical care firm DocGo confirmed it suffered a cyberattack after threat actors breached its systems and stole patient health data. [...]

A pro-Ukraine hacktivist group named 'Blackjack' has claimed a cyberattack against Russian provider of internet services M9com as a direct response to the attack against Kyivstar mobile operator. [...]

Reports say M9 Telecom servers were destroyed in retaliation for Russia-backed cyberattack against Kyivstar mobile phone operator.

Nation-State Hackers Blamed for Severing Communications to 24 Million CitizensUkraine's security intelligence chief said Russian hackers had been responsible for severing internet access and mobile communications from telecom operator Kyivstar in December, after compromising the firm's network months ago. He said the "disastrous" cyberattack had wiped "almost everything."

Ukraine's biggest telecom operator Kyivstar has become the victim of a cyber attack, disrupting customer access to mobile and internet services

Ukrainian President Volodymyr Zelenskyy Is in WashingtonUkrainian telecom operator Kyivstar was the target of a cyberattack that knocked internet access and mobile communications offline on the same day Ukrainian President Volodymyr Zelenskyy is in Washington to boost the case for additional military aid.

Kyivstar, Ukraine's largest telecommunications service provider serving over 25 million mobile and home internet subscribers, has suffered a cyberattack impacting mobile and data services. [...]

Lyca Mobile has released a statement about an unexpected disruption on its network caused by a cyberattack that may have also compromised customer data. [...]