The 2014 Sony Pictures hack: This hack was carried out by a group of hackers known as the Keepers of the Peace, who stole terabytes of data from Sony Pictures, including unreleased movies, employee emails, and financial records. Hackers also posted some of this data online, which caused significant damage to Sony's reputation.
The 2015 Ashley Madison Hack: This hack was carried out by a group of hackers known as Impact Team, who stole the personal details of more than 37 million users of the Ashley Madison dating website, including names, email addresses, email, private addresses and credits. card numbers Hackers posted this data online, causing great embarrassment and financial loss for Ashley Madison.
The WannaCry ransomware attack in 2017: This attack was carried out by a group of hackers who used a vulnerability in the Windows operating system to spread a ransomware virus that encrypted files on infected computers and demanded a ransom in Bitcoin in order to decrypt them. The attack affected more than 200,000 computers in more than 150 countries, causing billions of dollars in damage.
The 2017 Equifax data breach: This breach was one of the largest in history, affecting more than 145 million people. The hackers stole personal information, including names, social security numbers, and dates of birth, which could be used to commit identity theft.
The 2020 Ledger Hardware Wallet Hack: This hack was performed by a group of hackers who stole over 1 million user accounts from Ledger, a company that sells hardware wallets for storing cryptocurrency. Hackers stole users' private keys, giving them access to users' cryptocurrency wallets.
The 2021 Poly Network Hack: This hack was one of the largest cryptocurrency hacks in history, with hackers stealing over $600 million worth of cryptocurrency from the Poly Network. The hackers were eventually able to return most of the stolen funds.
The Ronin Network Hack in 2022: This hack was one of the largest cryptocurrency hacks in history, with hackers stealing over $600 million worth of cryptocurrency from the Ronin Network, a blockchain that powers the popular game Axie Infinity.
The Harmony Horizon Bridge Hack in 2022: This was one of the largest cryptocurrency hacks in history, with hackers stealing over $100 million worth of cryptocurrency from the Harmony Horizon Bridge, a cross-chain bridge that allows users to transfer assets between different blockchains.
The Wormhole Bridge Hack in 2022: This hack was one of the largest cryptocurrency hacks in history, with hackers stealing over $320 million worth of cryptocurrency from the Wormhole Bridge, a cross-chain bridge that allows users to transfer assets between different blockchains.
The Celsius Network freeze in 2022: This was not a hack, but rather a decision by Celsius Network, a cryptocurrency lending platform, to freeze withdrawals, exchanges, and transfers on their platform. This decision was made due to "extreme market conditions."
These are just a few examples of the many cryptographic flaws that have occurred. These failures highlight the importance of security in cryptographic systems and the need for continuous monitoring and improvement.


