Cybercrime

Nordic shift to cash sparks crypto debate

Sweden and Norway are urging citizens to keep using cash amid rising fears of cyberattacks and geopolitical instability. Once global leaders in cashless transactions, both countries are now rethinking their heavy reliance on digital payments.

The move comes as concerns grow over potential network failures and the need for resilient offline alternatives.

Vitalik Buterin, co-founder of Ethereum, has weighed in on the issue, highlighting the risks of centralised systems. He argued that the fragility of such infrastructures makes physical cash essential during crises.

However, he also sees a future role for Ethereum, if the network becomes robust, private, and decentralised enough to function as a reliable alternative.

For Ethereum to support national payment systems in emergencies, Buterin noted that it must improve its resilience and privacy. The platform has added upgrades, but challenges like scalability and high transaction costs still hinder mass adoption.

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Quantum computers might break Bitcoin security faster than thought

Google researchers have revealed that breaking RSA encryption—the technology securing crypto wallets—requires far fewer quantum resources than previously thought. The team found cracking 2048-bit RSA could take under a week using fewer than a million noisy qubits, 20 times less than previously estimated.

Currently, quantum computers like IBM’s Condor and Google’s Sycamore operate with far fewer qubits, so crypto assets remain safe for now. The significance lies in the rapid pace of improvement in quantum computing capabilities, which calls for increased vigilance.

The breakthrough stems from improved algorithms that speed up key calculations and smarter error correction methods. Researchers also enhanced ‘magic state cultivation,’ a technique that boosts quantum operation efficiency by reducing resource waste.

Bitcoin relies on elliptic curve cryptography, similar in principle to RSA. If quantum computers can crack RSA sooner, Bitcoin’s security timeline could be shortened.

Efforts like Project 11’s quantum Bitcoin bounty highlight ongoing research to test the threat’s urgency.

Quantum threats extend beyond crypto, affecting global secure communications, banking, and digital signatures. Google has begun encrypting more traffic with quantum-resistant protocols in preparation for this shift.

Despite rapid progress, challenges remain. Quantum computers must maintain stability and coherence for long periods to execute complex operations. Currently, this remains a major hurdle, so there is no immediate threat.

It seems likely the first quantum-resistant blockchain upgrades will arrive well before any quantum attack on Bitcoin’s network.

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Manhattan man accused of holding victim for Bitcoin credentials

A Manhattan-based crypto investor has been charged with kidnapping an Italian man. He allegedly tortured the victim in an attempt to gain access to his Bitcoin wallet.

John Woeltz, 37, was arrested on 24 May and later appeared in court, where he pleaded not guilty to four felony charges, including kidnapping for ransom.

Police said the 28-year-old victim was held inside a rented townhouse in Soho after arriving in the US on 6 May. He was allegedly beaten, electroshocked, and threatened with a firearm when he refused to give up his wallet credentials.

The man eventually escaped and contacted the authorities. Photographs found at the scene appeared to show signs of ongoing abuse.

A woman was also taken into custody, although no charges were filed against her. Investigators have not confirmed whether any cryptocurrency was taken or what the relationship between the parties may have been.

The case comes as more crypto executives and investors seek private security due to a rise in ransom threats. In France, authorities have introduced extra protections for those in the crypto industry.

These measures follow several kidnapping incidents, including the abduction of Ledger co-founder David Balland earlier this year.

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AI agents bring new security risks to crypto

AI agents are becoming common in crypto, embedded in wallets, trading bots and onchain assistants that automate decisions and tasks. At the core of many AI agents lies the Model Context Protocol (MCP), which controls their behaviour and interactions.

While MCP offers flexibility, it also opens up multiple security risks.

Security researchers at SlowMist have identified four main ways attackers could exploit AI agents via malicious plugins. These include data poisoning, JSON injection, function overrides, and cross-MCP calls, all of which can manipulate or disrupt an agent’s operations.

Unlike poisoning AI models during training, these attacks target real-time interactions and plugin behaviour.

The number of AI agents in crypto is growing rapidly, expected to reach over one million in 2025. Experts warn that failing to secure the AI layer early could expose crypto assets to serious threats, such as private key leaks or unauthorised access.

Developers are urged to enforce strict plugin verification, sanitise inputs, and apply least privilege access to prevent these vulnerabilities.

Building AI agents quickly without security measures risks costly breaches. While adding protections may be tedious, experts agree it is essential to protect crypto wallets and funds as AI agents become more widespread.

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Agentic AI could accelerate and automate future cyberattacks, Malwarebytes warns

A new report by Malwarebytes warns that the rise of agentic AI will significantly increase the frequency, sophistication, and scale of cyberattacks.

Since the launch of ChatGPT in late 2022, threat actors have used generative AI to write malware, craft phishing emails, and execute realistic social engineering schemes.

One notable case from January 2024 involved a finance employee who was deceived into transferring $25 million during a video call with AI-generated deepfakes of company executives.

Criminals have also found ways to bypass safety features in AI models using techniques such as prompt chaining, injection, and jailbreaking to generate malicious outputs.

While generative AI has already lowered the barrier to entry for cybercrime, the report highlights that agentic AI—capable of autonomously executing complex tasks—poses a far greater risk by automating time-consuming attacks like ransomware at scale.

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Cyber scams use a three-letter trap

Staying safe from cybercriminals can be surprisingly simple. While AI-powered scams grow more realistic, some signs are still painfully obvious.

If you spot the letters ‘.TOP’ in any message link, it’s best to stop reading and hit delete. That single clue is often enough to expose a scam in progress.

Most malicious texts pose as alerts about road tolls, deliveries or account issues, using trusted brand names to lure victims into clicking fake links.

The worst of these is the ‘.TOP’ top-level domain (TLD), which has become infamous for its role in phishing and scam operations. Although launched in 2014 for premium business use, its low cost and lack of oversight quickly made it a favourite among cyber gangs, especially those based in China.

Today, nearly one-third of all .TOP domains are linked to cybercrime — far surpassing the criminal activity seen on mainstream domains like ‘.com’.

Despite repeated warnings and an unresolved compliance notice from internet regulator ICANN, abuse linked to .TOP has only worsened.

Experts warn that it is highly unlikely any legitimate Western organisation would ever use a .TOP domain. If one appears in your messages, the safest option is to delete it without clicking.

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Secret passwords could fight deepfake scams

As AI-generated images grow increasingly lifelike, a cyber security expert has warned that families should create secret passwords to guard against deepfake scams.

Cody Barrow, chief executive of EclecticIQ and a former US government adviser, says AI is making it far easier for criminals to impersonate others using fabricated videos or images.

Mr Barrow and his wife now use a private code to confirm each other’s identity if either receives a suspicious message or video.

He believes this precaution, simple enough for anyone regardless of age or digital skills, could soon become essential. ‘It may sound dramatic here in May 2025,’ he said, ‘but I’m quite confident that in a few years, if not months, people will say: I should have done that.’

The warning comes the same week Google launched Veo 3, its AI video generator capable of producing hyper-realistic footage and lifelike dialogue. Its public release has raised concerns about how easily deepfakes could be misused for scams or manipulation.

Meanwhile, President Trump signed the ‘Take It Down Act’ into law, making the creation of deepfake pornography a criminal offence. The bipartisan measure will see prison terms for anyone producing or uploading such content, with First Lady Melania Trump stating it will ‘prioritise people over politics’

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Authorities strike down cybercriminal servers

Authorities across Europe, North America and the UK have dismantled a major global malware network by taking down over 300 servers and seizing millions in cryptocurrency. The operation, led by Eurojust, marks a significant phase of the ongoing Operation Endgame.

Law enforcement agencies from Germany, France, the Netherlands, Denmark, the UK, the US and Canada collaborated to target some of the world’s most dangerous malware variants and the cybercriminals responsible for them.

The takedown also resulted in international arrest warrants for 20 suspects and the identification of more than 36 individuals involved.

The latest move follows similar action in May 2024, which had been the largest coordinated effort against botnets. Since the start of the operation, over €21 million has been seized, including €3.5 million in cryptocurrency.

The malware disrupted in this crackdown, known as ‘initial access malware’, is used to gain a foothold in victims’ systems before further attacks like ransomware are launched.

Authorities have warned that Operation Endgame will continue, with further actions announced through the coalition’s website. Eighteen prime suspects will be added to the EU Most Wanted list.

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Banks push to scrap SEC cyber reporting rule

Five major US banking groups have asked the Securities and Exchange Commission (SEC) to drop its cyber security disclosure rule. The rule requires public companies to report incidents, such as data breaches, within four days.

The American Bankers Association and others said in a letter that the rule conflicts with systems built to protect critical infrastructure. They warned it may hurt law enforcement and cause market confusion.

The rule, introduced in July 2023, also affects crypto firms like Coinbase. However, the exchange recently reported a breach where hackers bribed staff for user data. Coinbase rejected a $20 million ransom but now faces at least seven lawsuits.

Banking groups want the SEC to remove Item 1.05 from Form 8-K rules. They argue investors would still be protected under existing rules for material information, without the risks of rushed public reporting.

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Ransomware gang leaks French government emails

A ransomware gang has published what it claims is sensitive data from multiple French organisations on a dark web forum.

The Stormous cartel, active since 2022, posted the dataset as a ‘comprehensive leak’ allegedly involving high-profile French government bodies.

However, researchers from Cybernews examined the information and found the data’s quality questionable, with outdated MD5 password hashes indicating it could be from older breaches.

Despite its age, the dataset could still be dangerous if reused credentials are involved. Threat actors may exploit the leaked emails for phishing campaigns by impersonating government agencies to extract more sensitive details.

Cybernews noted that even weak password hashes can eventually be cracked, especially when stronger security measures weren’t in place at the time of collection.

Among the affected organisations are Agence Française de Développement, the Paris Region’s Regional Health Agency, and the Court of Audit.

The number of exposed email addresses varies, with some institutions having only a handful leaked while others face hundreds. The French cybersecurity agency ANSSI has yet to comment.

Last year, France faced another massive exposure incident affecting 95 million citizen records, adding to concerns about ongoing cyber vulnerabilities.

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