Mendekonstruksi Kebocoran Data: Belajar dari Kasus Terkenal dan Mengambil Tindakan Pencegahan
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Deconstructing Big Data Leaks: Learning from Famous Cases and Taking Precautions

A major data leak can have severe consequences for individuals, businesses, and even governments. Learning from high-profile cases can provide valuable insight into the vulnerabilities and risks associated with managing large amounts of data.

The Biggest Data Breach Cases in History

The case of leaking Yahoo! email user data

In 2013 to 2016, a group of Russian hackers attacked Yahoo’s database using backdoors, stolen backup data, and access to cookies. They steal all users’ sensitive data, which includes privacy information such as names, email addresses, telephone numbers, birth dates, passwords, calendars, and security questions.

Lessons to be learned from the breach of Yahoo user data

Theft of sensitive data by hackers can be prevented by implementing Multi-factor Authentication, a method that has not been commonly used in those years. MFA adds an extra layer of protection besides the password, namely a code that is only sent to the user’s device.

Data theft scandal by Cambridge Analytica

British company Cambridge Analytica exploited a Facebook API flaw through a quiz app, thereby violating user trust. This case in April 2018 “killed” 50-90 million users. Despite this prior knowledge, Facebook’s delayed action resulted in a $5 billion fine from the Federal Trade Commission (FTC). As a result, the CEO of Cambridge Analytica, Alexander Nix, resigned and a top-down restructuring of Facebook was carried out.

How to prevent data theft scandals from happening again

Users need to know and agree to the use of personal data only on platforms that users truly trust. Businesses that handle user data also need to comply with government regulations on data protection, such as the General Data Protection Regulation (GDPR) and the California Consumer Privacy Act (CCPA) in the United States.

77 million PSN user data leaked

In a series of devastating cyber attacks that began in April 2011, millions of Sony users’ sensitive data was exposed. Hackers compromised more than one million Sony Pictures accounts, followed by stealing personal data from 25 million Sony Online Entertainment customers in May. A hack of the PlayStation Network in April exposed the data of 77 million users, leading to prolonged downtime. During a series of one of the biggest cyber attacks of this century, Sony was considered slow in dealing with the attack and seemed to cover up what happened.

So that you don’t miss out again…

Encryption of sensitive data, especially financial information, is paramount. Regular security testing and intrusion detection systems can help detect and mitigate breaches before they become larger.

500 million Marriott International data leak

Marriott International experienced a massive data breach that impacted 500 million guests across major hotel chains such as the Westin and Sheraton. The breach, which occurred in September 2018, compromised sensitive information, including passport numbers and credit card details. Many suspect there was a state-sponsored motive behind the attack. Marriott also had to pay a fairly large fine due to this cybersecurity violation in 2019.

Why does it happen and how can it be prevented?

The company merger is considered to be an opening for cybercriminals to tamper with the security of Marriott International’s network. To prevent massive data leaks like this, companies must conduct thorough due diligence during mergers and acquisitions to assess the cybersecurity posture of the acquired entity. Additionally, implementing data encryption and access controls can limit the impact of a breach.

Entrust the security of your data to Managed Service Providers who are experts in protecting businesses from cyber attacks. Protect your company’s valuable assets with Hypernet today.

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