An estimated $124 trillion in U.S. household wealth will change hands by 2048. Data shows cybercriminals are preparing accordingly.

A study by Accenture found that 77% of high-net-worth individuals are more worried about being hacked than they are about their investments declining in value. Despite that awareness, fewer than half of family offices have meaningful security controls. And high-net-worth families’ personal cybersecurity protections are often far worse. 

This gap between knowing and doing is where fortunes are lost.

What follows is BlackCloak’s cybersecurity playbook for protecting inherited wealth, built for family offices, estate attorneys, wealth managers, and high-net-worth families themselves. 

The unique vulnerabilities of wealth transfer

A single fraudulent wire transfer will drain a liquid estate in minutes. A compromised account can redirect years of investment returns. A stolen private key can make a cryptocurrency inheritance inaccessible. Today’s largest heists are committed with spoofed emails, cloned voices, and AI-generated deepfakes that move faster, scale larger, and vanish completely.

It’s a troubling reality as in 2025 91 heirs inherited a record $297.8 billion, while at the same time AI-powered scams surged 1,210%. These trends are not disconnected.

At the moment of wealth transfer, the attack surface is at its widest and its defenses are at their weakest. That’s because of:

  • Identity flux: As legal documents are filed, new names appear on accounts, and trusts are established, every change becomes a new vulnerability.
  • Public updates: Online data brokers compile and sell lists of individuals who have recently sold businesses, inherited estates, or received large settlements. Criminals also actively trawl wealth managers’ websites and social media to identify the super-rich and heirs.
  • Lack of preparedness: Heirs who suddenly inherit significant assets often lack the security infrastructure to protect them. 
  • Multi-party transactions. Estate settlement involves attorneys, trustees, financial advisors, appraisers, tax professionals, and banks. The more people involved, the more opportunities for impersonation, email compromise, and social engineering.
  • Emotional vulnerability. Grieving families under time pressure make decisions quickly, verify less carefully, and are more susceptible to urgency-based manipulation.

The threat landscape: Other challenges and what’s coming next

The tactics used to steal inherited wealth are also evolving faster than most estate plans. Here’s what families and their advisors are up against today:

  • AI makes impersonation undetectable: AI video and vishing attacks have made impersonation largely indistinguishable.
  • Estate administration is a perfect target: Unfamiliar parties emailing. Large wire transfers expected. Real deadlines creating real pressure. These conditions make active estate settlement one of the highest-risk windows for fraud. 
  • Digital assets with irreversible risk: An estimated 11–18% of Bitcoin’s total supply—roughly 3.7 million BTC—is gone forever. NFTs, tokenized real estate, and fractional ownership platforms carry the same risks with even less awareness among heirs and advisors.
  • The attack surface is wider than most realize: Domain names, high-audience social media accounts, proprietary software, and digital brand assets are significant estate components, though they are almost universally absent from security reviews. Even business email accounts compromised after death have been used to impersonate the deceased in fraudulent communications.

How to protect inheritance: Actionable strategies

The following steps, when implemented together, address most of the attack vectors targeting wealthy families during estate transfers. Most inheritance fraud succeeds not because it was inevitable, but because protections weren’t in place. 

1. Scrub the digital footprint

Most targeted attacks against wealthy families begin with something as simple as Google. Cybercriminals build targeting profiles from data broker sites, public records, and social aggregators long before they attempt contact. Digital protection involves information removal.

  • Remove family members’ personal data from data broker sites: names, addresses, phone numbers, family relationships, and financial signals all feed targeting profiles. Since data broker sites are extensive and repost personal information, we recommend services with continuous monitoring and re-removal.
  • Prioritize discretion around triggering events: Where possible, request removal of personal information from business sales, publicized inheritances, new trustee appointments, and philanthropic activity.

2. Defend against AI impersonation

This is the area where the threat has changed most dramatically in recent months, as both the sophistication and the frequency of attacks are rising. The old assumption that you can trust a familiar voice, a known face on a video call, or a well-written email from a recognized address is no longer valid.

  • Require out-of-band verification for all financial requests: Any wire transfer, account change, or sensitive authorization must be confirmed via a pre-established contact number, never one provided within the request itself. No single individual should be able to approve a major transfer unilaterally. Ideally, set these protocols before a death occurs, when there is no urgency or grief driving decisions.
  • Deploy impersonation protection: Impersonation protection provides real-time validation of  communications, resulting in confidence that the message, video call, or other form of communication is coming from that source, directly combating deepfake threats targeting HNWI clients and their families.

3. Build a complete digital asset inventory — Treat like a classified document

An estate plan that covers real estate, securities, and bank accounts but ignores cryptocurrency wallets, domain registrations, and digital business assets creates a hole through which a significant portion of the estate can disappear.

  • The inventory should cover: cryptocurrency wallets and hardware device locations, exchange and custodial accounts, domain registrations, high-value social media and email accounts, digital business assets, and password manager access credentials.
  • Store it encrypted and access-controlled: Never include private keys or seed phrases in plaintext. Never include key access instructions in the will itself.

4. Harden the personal security layer

Only 40% of family offices have meaningful cybersecurity controls, despite nearly three-quarters experiencing an attack in the prior year. The sophistication of attacks directed at most HNWIs today matches or exceeds that faced by mid-market enterprises, without the enterprise security infrastructure to absorb them.

  • Communications: Use encrypted channels for all sensitive estate and financial discussions. Standard email and SMS are not secure enough for estate administration communications.
  • Device hardening: Full-disk encryption, current patching, and remote wipe capability are baseline requirements on all devices with access to financial systems, including mobile.
  • Home network security: Maintain segregated networks for smart home devices, guest access, and primary financial devices. Keep router firmware current and implement DNS filtering to block malicious domains before they reach devices. HNWIs should seek out expert home network security services.
  • Social account monitoring: Actively monitor and privacy-harden all family members’ social accounts, including adult children and household staff. Tagged photos, location data, and public posts are primary Open-Source Intelligence (OSINT) sources that attackers use to build targeting profiles and extract voice cloning material.
  • Third-party review: Law firms, financial advisors, and other estate professionals with access to sensitive information are part of the family’s attack surface. Include them in security assessments and verify their own security posture before sharing sensitive documents.

5. Create a digital security succession plan

The most common and least discussed estate cybersecurity failure looks like this: the family member who managed all the digital accounts (passwords, crypto wallets, 2FA devices, online brokerage logins) dies suddenly. Heirs are left either permanently locked out or forced into unsecured workarounds. It’s often a common reason for inheritance loss with no criminals involved. 

  • Document who has access to what, how each account is managed, recovery procedures for locked accounts, and who the designated digital executor is.
  • Store this documentation securely and separately from the assets themselves, not in the same password manager it’s meant to help recover.
  • Review and update annually, and whenever accounts, family members, or family office staff change. Stale documentation is nearly as useless as none.

6. Education for heirs before transfer happens

The moment of inheritance is the worst possible time to learn cybersecurity basics. Preparation before the transfer is the difference between a protected heir and an easy mark.

  • Brief heirs before any transfer occurs: how impersonation fraud works, what voice cloning and deepfake video can do, basic password hygiene, and why the family’s verification protocols exist and must be followed. A single hour with a qualified cybersecurity professional before the transfer is infinitely more valuable than attempting recovery after a compromise.
  • Give particular attention to younger heirs: Younger heirs often have a higher social media presence, meaning greater OSINT exposure and more raw material available for voice cloning and identity attacks. Even teens’ and kids’ digital habits are part of the family’s security posture, and they need to be treated that way.

Don’t wait for a breach to take security seriously

Time and again, we see the cost of implementing these protections is a fraction of what a single successful attack costs, financially, legally, and in terms of what can never be recovered. Unfortunately, the question isn’t whether the threat is real. It’s whether inheritance is protected before it arrives.

BlackCloak protects the primary targets of inheritance fraud and cyberattacks through comprehensive digital protection for high-net-worth individuals and their families, including personal cybersecurity, data broker removal, device security, and ongoing monitoring. 

Contact our team to learn more today.