Encryption

SK Telecom investigates data breach after cyberattack

South Korean telecom leader SK Telecom has confirmed a cyberattack that compromised customer data following a malware infection.

The breach was detected on 19 April, prompting an immediate internal investigation and response. Authorities, including the Korea Internet Security Agency, have been alerted.

Personal information of South Korean customers was accessed during the attack, although the extent of the breach remains under review. In response, SK Telecom is offering a complimentary SIM protection service, hinting at potential SIM swapping risks linked to the leaked data.

The infected systems were quickly isolated and the malware removed. While no group has claimed responsibility, concerns remain over possible state-sponsored involvement, as telecom providers are frequent targets for cyberespionage.

It is currently unknown whether ransomware played a role in the incident. Investigations are ongoing as officials continue to assess the scope and origin of the breach.

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Russian hackers target NGOs with fake video calls

Hackers linked to Russia are refining their techniques to infiltrate Microsoft 365 accounts, according to cybersecurity firm Volexity.

Their latest strategy targets non-governmental organisations (NGOs) associated with Ukraine by exploiting OAuth, a protocol used for app authorisation without passwords.

Victims are lured into fake video calls through apps like Signal or WhatsApp and tricked into handing over OAuth codes, which attackers then use to access Microsoft 365 environments.

The campaign, first detected in March, involved messages claiming to come from European security officials proposing meetings with political representatives. Instead of legitimate video links, these messages directed recipients to OAuth code generators.

Once a code was shared, attackers could gain entry into accounts containing sensitive data. Staff at human rights organisations were especially targeted due to their work on Ukraine-related issues.

Volexity attributed the scheme to two threat actors, UTA0352 and UTA0355, though it did not directly connect them to any known Russian advanced persistent threat groups.

A previous attack from the same actors used Microsoft Device Code Authentication, usually reserved for connecting smart devices, instead of traditional login methods. Both campaigns show a growing sophistication in social engineering tactics.

Given the widespread use of Microsoft 365 tools like Outlook and Teams, experts urge organisations to heighten awareness among staff.

Rather than trusting unsolicited messages on encrypted apps, users should remain cautious when prompted to click links or enter authentication codes, as these could be cleverly disguised attempts to breach secure systems.

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Google spoofed in sophisticated phishing attack

A sophisticated phishing attack recently targeted Google users, exploiting a well-known email authentication method to bypass security measures.

The attackers sent emails appearing to be from Google’s legitimate address, no-reply@accounts.google.com, and claimed the recipient needed to comply with a subpoena.

The emails contained a link to a Google Sites page, prompting users to log in and revealing a fake legal support page.

What made this phishing attempt particularly dangerous was that it successfully passed both DMARC and DKIM email authentication checks, making it appear entirely genuine to recipients.

In another cyber-related development, Microsoft issued a warning regarding the use of Node.js in distributing malware. Attackers have been using the JavaScript runtime environment to deploy malware through scripts and executables, particularly targeting cryptocurrency traders via malvertising campaigns.

The new technique involves executing JavaScript directly from the command line, making it harder to detect by traditional security tools.

Meanwhile, the US has witnessed a significant change in its disinformation-fighting efforts.

The State Department has closed its Counter Foreign Information Manipulation and Interference group, previously known as the Global Engagement Center, after accusations that it was overreaching in its censorship activities.

The closure, led by Secretary of State Marco Rubio, has sparked criticism, with some seeing it as a victory for foreign powers like Russia and China.

Finally, gig workers face new challenges as the Tech Transparency Project revealed that Facebook groups are being used to trade fake gig worker accounts for platforms like Uber and Lyft.

Sellers offer access to verified accounts, bypassing safety checks, and putting passengers and customers at risk. Despite reports to Meta, many of these groups remain active, with the social media giant’s automated systems failing to curb the activity.

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Fake banking apps leave sellers thousands out of pocket

Scammers are using fake mobile banking apps to trick people into handing over valuable items without receiving any payment.

These apps, which convincingly mimic legitimate platforms, display false ‘successful payment’ screens in person, allowing fraudsters to walk away with goods while the money never arrives.

Victims like Anthony Rudd and John Reddock have lost thousands after being targeted while selling items through social media marketplaces. Mr Rudd handed over £1,000 worth of tools from his Salisbury workshop, only to realise the payment notification was fake.

Mr Reddock, from the UK, lost a £2,000 gold bracelet he had hoped to sell to fund a holiday for his children.

BBC West Investigations found that some of these fake apps, previously removed from the Google Play store, are now being downloaded directly from the internet onto Android phones.

The Chartered Trading Standards Institute described this scam as an emerging threat, warning that in-person fraud is growing more complex instead of fading away.

With police often unable to track down suspects, small business owners like Sebastian Liberek have been left feeling helpless after being targeted repeatedly.

He has lost hundreds of pounds to fake transfers and believes scammers will continue striking, while enforcement remains limited and platforms fail to do enough to stop the spread of fraud.

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Colorado’s experiment with crypto tax payments shows limited adoption

Since Colorado began accepting cryptocurrency for tax payments in September 2022, the amount paid via crypto has been minimal. Out of the $11 billion in income tax collected since 2022, just 0.0005%, or roughly $57,000, has been paid using digital assets.

The state initially saw eight crypto payments totalling $16,426 in 2022, which rose to 22 payments amounting to $23,241 in 2023. However, the number declined again in 2024 to $17,544 across 48 payments.

Governor Jared Polis’ initiative allows taxpayers to use PayPal’s Crypto Hub, converting their crypto into US dollars. It means Colorado doesn’t directly receive crypto, undermining the notion that digital assets are widely used for tax payments.

Bitcoin, primarily a store of value, doesn’t lend itself to transactions like these, according to experts.

Although Colorado leads in this innovation, Utah is the only other state accepting cryptocurrency for taxes. Looking ahead, commentators suggest that stablecoins, rather than Bitcoin, will become the primary method for crypto-based transactions.

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Europe struggles to explain quantum to its citizens

Most Europeans remain unclear about quantum technology, despite increasing attention from EU leaders. A new survey, released on World Quantum Day, reveals that while 78 per cent of adults in France and Germany are aware of quantum, only a third truly understand what it is.

Nearly half admitted they had heard of the term but didn’t know what it means.

Quantum science studies the smallest building blocks of the universe, particles like electrons and atoms, that behave in ways classical physics can’t explain. Though invisible even to standard microscopes, they already power technologies such as GPS, MRI scanners and semiconductors.

Quantum tools could lead to breakthroughs in healthcare, cybersecurity, and climate change, by enabling ultra-precise imaging, improved encryption, and advanced environmental monitoring.

The survey showed that 47 per cent of respondents expect quantum to positively impact their country within five years, with many hopeful about its role in areas like energy, medicine and fraud prevention.

For example, quantum computers might help simulate complex molecules for drug development, while quantum encryption could secure communications better than current systems.

The EU has committed to developing a European quantum chip and is exploring a potential Quantum Act, backed by €65 million in funding under the EU Chips Act. The UK has pledged £121 million for quantum initiatives.

However, Europe still trails behind China and the US, mainly due to limited private investment and slower deployment. Former ECB president Mario Draghi warned that Europe must build a globally competitive quantum ecosystem instead of falling behind further.

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Hertz customer data stolen in vendor cyberattack

Hertz has disclosed a significant data breach involving sensitive customer information, including credit card and driver’s licence details, following a cyberattack on one of its service providers.

The breach stemmed from vulnerabilities in the Cleo Communications file transfer platform, exploited in October and December 2024.

Hertz confirmed the unauthorised access on 10 February, with further investigations revealing a range of exposed data, including names, birth dates, contact details, and in some cases, Social Security and passport numbers.

While the company has not confirmed how many individuals were affected, notifications have been issued in the US, UK, Canada, Australia, and across the EU.

Hertz stressed that no misuse of customer data has been identified so far, and that the breach has been reported to law enforcement and regulators. Cleo has since patched the exploited vulnerabilities.

The identity of the attackers remains unknown. However, Cleo was previously targeted in a broader cyber campaign last October, with the Clop ransomware group later claiming responsibility.

The gang published Cleo’s company data online and listed dozens of breached organisations, suggesting the incident was part of a wider, coordinated effort.

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KiloEX loses $7.5 million in oracle hack

A hacker has exploited decentralised exchange KiloEX, draining approximately US$7.5 million by manipulating its price oracle mechanism. The breach led to an immediate suspension of the platform and sparked a cross-industry investigation involving cybersecurity firms and blockchain networks.

The vulnerability centred on KiloEX’s price feed system, which allowed the attacker to manipulate the ETH/USD feed by inputting an artificial entry price of 100 and closing it at 10,000.

According to cybersecurity firm PeckShield, this simple flaw enabled the attacker to steal millions across multiple chains, including $3.3 million from Base, $3.1 million from opBNB, and $1 million from BNB Smart Chain.

KiloEX is working with various security experts and blockchain networks such as BNB Chain and Manta Network to recover the stolen assets.

Funds are reportedly being routed through cross-chain protocols like zkBridge and Meson. Co-founder of Fuzzland, Chaofan Shou, described the breach as stemming from a ‘very simple vulnerability’ in oracle verification, where only intermediaries were validated rather than the original transaction sender.

The attack caused KiloEX’s token price to plummet by over 29% and came just one day after the platform announced a strategic partnership with DWF Labs, aimed at fuelling growth. KiloEX has promised a full incident report and a bounty programme to encourage asset recovery.

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Beijing blames NSA for hacking Asian Games systems

Chinese authorities have accused three alleged US operatives of orchestrating cyberattacks on national infrastructure during the Asian Games in Harbin this February.

The individuals, identified by Harbin police as Katheryn A. Wilson, Robert J. Snelling, and Stephen W. Johnson, are said to have worked through the US National Security Agency (NSA).

The attacks reportedly targeted systems critical to the Games’ operations, including athlete registration, travel, and competition management, which held sensitive personal data.

Chinese state media further claimed that the cyber intrusions extended beyond the sporting event, affecting key infrastructure in Heilongjiang province. Targets allegedly included energy, transport, water, telecoms, defence research institutions, and technology giant Huawei.

Authorities said the NSA used encrypted data to compromise Microsoft Windows systems in the region, with the aim of disrupting services and undermining national security.

The Foreign Ministry of China denounced the alleged cyberattacks as ‘extremely malicious,’ urging the United States to halt what it called repeated intrusions and misinformation.

The UD Embassy in Beijing has yet to respond, and the allegations come amid ongoing tensions, with both nations frequently accusing each other of state-backed hacking.

Only last month, the US government named and charged 12 Chinese nationals in connection with cyberespionage efforts against American interests.

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AI voice hacks put fake Musk and Zuckerberg at crosswalks

Crosswalk buttons in several Californian cities have been hacked to play AI-generated voices impersonating tech moguls Elon Musk and Mark Zuckerberg, delivering bizarre and satirical messages to pedestrians.

The spoof messages, which mock the CEOs with lines like ‘Can we be friends?’ and ‘Cooking our grandparents’ brains with AI slop,’ have been heard in Palo Alto, Redwood City, and Menlo Park.

US Palo Alto officials confirmed that 12 intersections were affected and the audio systems have since been disabled.

While the crosswalk signals themselves remain operational, authorities are investigating how the hack was carried out. Similar issues are being addressed in nearby cities, with local governments moving quickly to secure the compromised systems.

The prank, which uses AI voice cloning, appears to layer these spoofed messages on top of the usual accessibility features rather than replacing them entirely.

Though clearly comedic in intent, the incident has raised concerns about the growing ease with which public systems can be manipulated using generative technologies.

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