{"id":392,"date":"2019-07-08T21:17:50","date_gmt":"2019-07-08T21:17:50","guid":{"rendered":"https:\/\/sectigostore.com\/blog\/?p=392"},"modified":"2025-04-28T12:05:58","modified_gmt":"2025-04-28T12:05:58","slug":"the-7-biggest-data-breaches-of-all-time","status":"publish","type":"post","link":"https:\/\/sectigostore.com\/blog\/the-7-biggest-data-breaches-of-all-time\/","title":{"rendered":"The 7 Biggest Data Breaches of All Time"},"content":{"rendered":"\n<p>With all the data breach\nheadlines that dominate the news, you might think that there\u2019s a new data\nbreach every week. In fact, data breaches are even more common than that \u2013 <a href=\"https:\/\/www.cbronline.com\/news\/global-data-breaches-2018\">they\nhappen so often that on average, 291 records are stolen every second.<\/a> &nbsp;And although most of these breaches may be\nconsidered \u2018small\u2019 by definition, there\u2019s always a leading breach for any given\nyear, such as the <a href=\"https:\/\/www.thesslstore.com\/blog\/facebook-network-breach\/\">Facebook<\/a> and <a href=\"https:\/\/www.thesslstore.com\/blog\/equifax-data-breach-total-data-lost-the-final-count\/\">Equifax<\/a>\nbreaches which both occurred in 2018. <\/p>\n\n\n\n<p>Significant data breaches started\nto become more common around 2005 <a href=\"https:\/\/www.lifelock.com\/learn-data-breaches-history-of-data-breaches.html\">when\nDSW Shoes Warehouse was the victim of a breach that compromised up to 1.4\nmillion credit card numbers<\/a>. That\u2019s not to say breaches didn\u2019t exist before\nthat. For example, there had already been a previous breach involving George\nMason University in January of that same year\u2014although this only affected a\nreported 32,000 students.<\/p>\n\n\n\n<p>We\u2019re\nnot here to learn about the smallest breaches though, although they are\nimportant, too. Year after year, a new breach takes the crown, whether in\nfinancial loss or the amount of data stolen. With that being said, we\u2019ll be\ncovering the 7 Biggest Data Breaches in the history of technology. <\/p>\n\n\n\n<p><em>The\nsites are ranked from most to least expensive, after considering financial loss\nas well as users impacted.<\/em><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">1. Yahoo \u2013 3 Billion Users, $118 Million<\/h2>\n\n\n\n<p><a href=\"https:\/\/www.nytimes.com\/2017\/10\/03\/technology\/yahoo-hack-3-billion-users.html\">In July 2016, it was revealed that a data breach that had occurred in August of 2013 impacted every user of Yahoo<\/a>. That\u2019s right, all 3 billion users. This is the biggest data breach in history, even to date. The revelation came months after Verizon purchased Yahoo\u2019s internet assets for $4.48 billion. <\/p>\n\n\n\n<p>As a result of this breach, Yahoo was ordered in court to pay the sum of $117.5 million. This makes the Yahoo breach not only the largest breach (in terms of how many people it affected) but also the costliest in the world (at the time). The identity of the hacker who executed the breach is unknown, although multiple sources point to \u201cPeace\u201d, a well-known data merchant in the dark web.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">2. Marriott \u2013 500 Million Users, $72 Million<\/h2>\n\n\n\n<p><a href=\"https:\/\/www.bloomberg.com\/news\/articles\/2018-12-05\/marriott-cfo-calls-1-billion-estimate-on-cyber-breach-premature\">Marriott\nsuffered a breach in 2014 which has reportedly cost them $72 million so far<\/a>\u2014and\nthe costs are expected to increase in future quarterly reports. This happened\nafter an analyst opened malware in his email and it spread throughout the\nnetwork, stealing customers\u2019 data. <\/p>\n\n\n\n<p>Ironically,\nit was also reported that Marriott has collected $71 million in insurance\nreimbursements related to the incident, meaning they\u2019d only suffer a $1 million\nloss. <\/p>\n\n\n\n<p>That\ngoes to show the importance of having cybersecurity insurance\u2026 although their\nnew insurance rate will be teaching them a lesson!<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">3. FriendFinder \u2013 412 Million Users, $70 Million<\/h2>\n\n\n\n<p><a href=\"https:\/\/techcrunch.com\/2016\/11\/13\/friendfinder-hack-412-million-accounts-breached\/\">FriendFinderNetworks,\nan adult site chain, was breached in 2016<\/a> through a local file inclusion\nvulnerability, which allowed the attackers to execute code remotely to gain\naccess to the site\u2019s database. <\/p>\n\n\n\n<p>An estimated 412 million users were affected in the various adult websites that FriendFinderNetworks owns, costing them an estimated $70 million. They had already filed for Chapter 11 bankruptcy in September 2013, so it wouldn\u2019t be surprising to see them shut down after this breach. <\/p>\n\n\n\n<p>Adding insult to injury, LeakedSource reported that \u201cthe company either stored user passwords in plaintext, without any protection, or hashed them using the notoriously weak SHA1 algorithm\u201d. <\/p>\n\n\n\n<p>This\nmeans that FriendFinder was rarely encrypting their customers\u2019 passwords in\ntheir database, making it incredibly easy for hackers to make use of the data\nonce they had stolen it. Or, in the case that they did use encryption, they\nused SHA-1, an algorithm that <a href=\"https:\/\/www.computerworld.com\/article\/3173616\/the-sha1-hash-function-is-now-completely-unsafe.html\">has\nbeen proven insecure<\/a>. <\/p>\n\n\n\n<p>Don\u2019t\nstore your passwords in plaintext, folks!<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">4. MySpace \u2013 360 Million Users, $20 Million<\/h2>\n\n\n\n<p>MySpace, a now-defunct social media site (by popularity vote, at least) was a victim to a data breach in which over 360 million users\u2019 data and 427 million passwords were compromised, although the data was seen to be outdated as the site relaunched their site with added security in 2013. <a href=\"https:\/\/techcrunch.com\/2016\/05\/31\/recently-confirmed-myspace-hack-could-be-the-largest-yet\/\">At the time, this was the largest breach that any company had suffered.<\/a><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">5. LinkedIn \u2013 165 Million Users, $1 Million<\/h2>\n\n\n\n<p>In\nJune of 2012, LinkedIn revealed that it had been the victim of a breach, <a href=\"https:\/\/www.securityweek.com\/linkedin-breach-cost-1m-says-2-3-million-security-upgrades-coming\">causing\nlosses of up to $1 Million.<\/a> <\/p>\n\n\n\n<p>The\nmethod they used to breach the site is unknown, but the damage was increased\nbecause the data the hackers obtained was not correctly encrypted. The user\npasswords were unsalted and used the SHA-1 hashing function, <a href=\"https:\/\/www.computerworld.com\/article\/3173616\/the-sha1-hash-function-is-now-completely-unsafe.html\">which\nwas recently proven to be unsafe<\/a>.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">6. Equifax \u2013 145 Million Users, $1.4 Billion<\/h2>\n\n\n\n<p>Of\ncourse, who could forget the Equifax breach? <\/p>\n\n\n\n<p>In May\n2017, Equifax, a data analytics company which specializes in providing credit\nscores, was breached\u2014<a href=\"https:\/\/www.thesslstore.com\/blog\/equifax-data-breach-total-data-lost-the-final-count\/\">causing\nmore than 150 million U.S consumers to be impacted.<\/a> <\/p>\n\n\n\n<p>Regardless\nof its\u2019 <a href=\"https:\/\/www.wabe.org\/equifax-says-cybersecurity-breach-has-cost-1-4-billion\/\">estimated\n$1.4 billion price tag<\/a>, many argue that the breach could have\nbeen entirely preventable, <a href=\"https:\/\/www.wired.com\/story\/equifax-breach-no-excuse\/\">as\nattackers gained access to the data through a web application vulnerability<\/a> which\nhad a patch available since March of that same year&#8230; two months before the\nbreach occurred.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">7. Heartland Payment Systems \u2013 130 Million Users, $140 Million<\/h2>\n\n\n\n<p>As the\nlargest data breach to affect an American company, it would be a crime (pun\nintended!) to not include the 2009 Heartland Payment Systems breach in this\nlist.<\/p>\n\n\n\n<p>This\nbreach came at a greater cost than most others as it emerged from a payment\nsystems company, which means that aside from personal data, financial\ninformation such as debit or credit cards were also compromised. In all, <a href=\"https:\/\/www.forbes.com\/sites\/davelewis\/2015\/05\/31\/heartland-payment-systems-suffers-data-breach\/#72499fbc744a\">it is\nestimated that over 130 million debit and credit cards were\ncompromised\u2014totaling a whopping $140 million.<\/a><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Lessons Learned: How You Can Protect Your Company Against Similar Attacks<\/h3>\n\n\n\n<p>Although breaches will always be a\npart of the cyberworld, that doesn\u2019t mean you can\u2019t protect yourself from them.\nAs shown in the aforementioned list, data breaches can cost businesses\nmillions, even billions of dollars. Not only this, but some of these breaches\ncould\u2019ve been prevented, such as the ones that Equifax and LinkedIn suffered.\nHere are a few things you can do to reduce the probability of your company\nbeing breached:<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>Update your software with the latest patches \u2013 the lack of an updated web application cost Equifax $1 billion<\/li><li>Provide cybersecurity training to employees \u2013 the opening of an infected email cost Mariott $72 million<\/li><li>Encrypt user passwords &amp; data to current standards \u2013 because FriendFinder stored passwords in plaintext and an outdated encryption method (SHA-1), they suffered over $70 million in damages.&nbsp;This number would\u2019ve been significantly lower had they used an updated encryption method, such as SHA-2.<\/li><\/ul>\n","protected":false},"excerpt":{"rendered":"<p>With all the data breach headlines that dominate the news, you might think that there\u2019s a new data breach every week. In fact, data breaches are even more common than&#8230;<\/p>\n","protected":false},"author":7,"featured_media":402,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[7],"class_list":["post-392","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-web-security","tag-data-breaches","post-with-tags"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>The 7 Biggest Data Breaches of All Time - InfoSec Insights<\/title>\n<meta name=\"description\" content=\"Cybersecurity breaches exceed $1 billion every year with some estimating that damages will surpass $6 trillion by 2021. 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