Voice-Phishing Scams Targeting Top Funds Push Billionaires to Strengthen Security

Voice-Phishing Attacks Put Hedge Funds on Alert

The phone rings, and the voice on the other end sounds official. That is the new front line in the fight over billionaire money.

Voice phishing is exactly what it sounds like: scammers use phone calls instead of emails to pose as a trusted person and talk someone into handing over passwords, account numbers, or other secrets.

As of August 6, 2026, whether any of the attempts worked is still unknown. The attacks are pushing billionaires who back major companies and institutions to increase their cybersecurity spending.

Family Offices Are Tempting Targets

Family offices are the private companies rich families set up to manage their money. Their assets can rival big institutions, but their staffs are much smaller, and that makes them tempting targets.

Goldman Sachs Family Office Solutions head Chris Gleason says client-safety questions come up daily. "We'll get calls from clients saying things like 'Someone purchased two cars in Texas and I've never been to Texas,' or 'Someone has taken out a loan in our name for $1 million and we've never been to that state.'"

Wire fraud, Gleason says, usually causes the largest losses.

UBS private wealth management head John Mathews says he asks every client what is on their mind. "Security is the new one," he says, adding that it was not among the five biggest worries 18 months ago.

He says the people most on edge are at the lower end of the ultra-wealthy range. "All billionaires have personal security/), executives have to have it, but the typical person who sold a business and is worth $500 million, they're worried."

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Forty percent said family assets suffered significant harm.

Among offices with assets under $500 million, one in 10 had no formal cybersecurity defenses.

The combination of large balances and small staffs makes these offices especially vulnerable, which is why the phone-based attacks aimed at top hedge funds have drawn attention across the industry.

AI Makes the Scams Sharper

BlackCloak founder and CEO Chris Pierson says cyberattacks on the ultra-rich have intensified over the past decade. The shift, he says, was fueled by Covid-era remote work and AI-enabled methods.

"This is where cyber criminals really started hooking their fangs into ultra-high-net worth people," Pierson says. BlackCloak scans clients' home networks and internet-connected devices every week.

The job is big because his clients average three to five homes.

AI is a big reason criminals have gotten more capable.

Pierson says the money at stake is not small-time. "Their takes aren't the $30, the $300, the $3,000, which we're massively sympathetic to."

"These are people being taken for a wire transfer on a home and it's $3 million."

Cyber Risk and Physical Risk Are Now Connected

Since the assassination of UnitedHealthcare's former CEO Brian Thompson on a Manhattan sidewalk on Dec. 4, 2024, wealthy families have started treating online attacks and physical attacks as the same problem.

Glen Kucera, president of Allied Universal Enhanced Protection Services, says the industry felt the shift instantly. "December 4 changed the whole industry."

Famous names like Elon Musk and Mark Zuckerberg have always had bodyguards and security teams, Kucera says. "It was really eye opening to others that were not in the press all the time."

What It Means for Your Money

This may sound like a billionaire problem, but the same AI-backed tricks can work on anyone. The financial firms that manage your money have to guard against the same kind of calls, the same fake loans, and the same wire-fraud schemes.

When the people with the most money decide defense is a permanent cost, it is a sign of how far the threat has grown. For you, it is a reminder that your money is only as safe as the people watching the doors, and now they all say the doors keep getting tested.

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