How a Massive Cyberattack Exposed Tons of Sensitive Data

Are your establishment’s digital defenses strong enough to withstand a cyberattack? With the recent high-profile breach at Landmark Admin making headlines, the question is more critical than ever.

How a Massive Cyberattack Exposed Tons of Sensitive Data

Cyberattack at Landmark Admin Exposes Over 800,000 Users

Landmark Admin, a digital administrative support provider for life insurance and annuity firms, recently fell victim to a devastating cyberattack. Their systems, which handle sensitive operations like claims management and new business processing, were infiltrated in a targeted ransomware attack between May 13 and June 17, 2024. Despite swift action by their cybersecurity team, the breach exposed the private information of 806,519 individuals.

What Data Was Stolen in the Landmark Admin Cyberattack?

The attackers exfiltrated and encrypted vast amounts of sensitive data. Affected individuals were notified that the following information might have been compromised:

  • First and last names
  • Dates of birth
  • Addresses
  • Social Security numbers
  • Tax identification numbers
  • Driver’s license and state-issued ID numbers
  • Passport details
  • Health insurance policy numbers
  • Medical histories
  • Life and annuity policy details

The extent of exposed data varied by individual, but the potential for identity theft is a serious concern.

How Landmark Admin Responded to the Cyberattack

In compliance with legal requirements, Landmark Admin reported the breach to the Maine Office of the Attorney General and engaged third-party forensic experts to investigate. To help victims recover, the company is offering the following support through IDX, a trusted identity protection service:

  • 12 months of CyberScan monitoring
  • Credit monitoring services
  • $1,000,000 in insurance reimbursement, which can cover:
    • Lost wages
    • Damages
    • Legal fees
    • Replacement documentation

IDX’s extensive experience, including partnerships with Fortune 500 companies and the US federal government, underscores the seriousness of this breach.

What Can You Do to Stay Safe After a Cyberattack?

If this breach impacted you, or even if you weren’t, now is the time to take proactive measures to protect your identity and financial information. Here are some steps to stay vigilant:

  • Monitor your accounts: Regularly check bank and credit card statements for unauthorized activity.
  • Update your passwords: Use strong, unique passwords for each account.
  • Beware of phishing attempts: Avoid clicking on links or interacting with suspicious messages.
  • Stay informed: Pay attention to updates from service providers regarding cybersecurity incidents.

Taking these steps can reduce your risk of falling victim to cybercrime.

FAQs About the Landmark Admin Cyberattack

1. What is ransomware, and how does it work?
Ransomware is malicious software that locks or encrypts data until a ransom is paid. In this attack, hackers also exfiltrated sensitive data, creating a dual threat of encryption and potential public exposure.

2. How do I know if my information was part of this breach?
Landmark Admin has notified all affected individuals. If you haven’t received a notification but are concerned, contact the company or IDX directly to verify.

3. What should I do if my Social Security number was exposed?
Immediately monitor your credit for unusual activity, place a fraud alert or freeze on your credit file, and take advantage of the identity protection services provided by Landmark Admin.


Contact CTTS today for IT support and managed services in Austin, TX. Let us handle your IT so you can focus on growing your business. Visit CTTSonline.com or call us at (512) 388-5559 to get started!