A crypto wallet hack can be a devastating experience, especially if you're not prepared. Your funds can disappear in an instant, leaving you with nothing.
The risks of a crypto wallet hack are real, and it's not just a matter of losing some money. According to a study, 71% of cryptocurrency users have been victims of hacking, with an average loss of $10,000.
The good news is that you can take steps to protect yourself. A strong password and two-factor authentication can go a long way in securing your wallet.
What Is a Crypto Wallet Hack?
A crypto wallet hack occurs when a hacker gains access to your private keys, which are stored in your wallet. This can happen through a hack on the wallet application or device.
Private keys are incredibly secure, with 115 quattuorvigintillion possibilities, making it virtually impossible to brute force the encryption with current technology.
However, hackers can still access your private keys if your wallet is connected to the internet, known as a hot wallet, or if the application or device is compromised.
What Is a Hack?
A hack is a form of theft that results in cryptocurrency being stolen. It's a serious issue that can have devastating consequences for individuals and businesses alike.
A crypto hack is a type of hack that specifically targets cryptocurrency. This can include hacking into exchanges, wallets, or other platforms that hold cryptocurrency.
Hacking into a cryptocurrency system can be done through various means, including exploiting vulnerabilities in code or using social engineering tactics to trick users into giving up their credentials.
Understand the Implications
A crypto wallet hack can be a stressful situation, but it's essential to understand the implications of a compromised wallet. Transactions on the blockchain cannot be reversed by anyone, not even Trust Wallet.
You can't rely on a central authority to fix the issue, as Web3 is decentralized. This means assets cannot be recovered once transferred out of your wallet.
If you discover a breach, take immediate action to prevent further losses. This includes migrating your funds to a new wallet and securing your secret phrase.
Here's a crucial step to remember: do not reuse the compromised seed phrase, password, or any associated credentials from the previous wallet. This will help protect your new wallet from being compromised as well.
To migrate your funds, follow these steps: set up a new wallet and backup your secret phrase securely, transfer any remaining funds to the new wallet's address, and then set up a new wallet address if you're using the Trust Wallet Mobile App or Browser Extension.
Types of Hacks
Ice phishing is a sneaky type of attack that accounted for 55.8% of all attacks in May. It tricks victims into signing malicious blockchain transactions that open access to their wallet, allowing attackers to steal all their money.
This type of phishing doesn't aim for users' private information, but instead, it uses "token approval" transactions to gain control over wallets. Token approval is a common use for non-custodial Web3 wallets that enable users to grant smart contracts access to their wallets.
Users are often lured onto phishing websites designed to mimic real crypto services, creating a false sense of security. In these scams, victims forfeit control over their assets by signing token approval transactions without checking what they're signing up for.
Other Types of Theft
Everyone hears about the large exchange hacks on the news, but what isn't often mentioned is the techniques other than hacking used to steal cryptocurrency.
Scams have always been a method used by thieves, and in 2023, romance scams were among the biggest techniques used to acquire crypto. Thieves pose as romantic possibilities until a target is comfortable, and then begin a quest to convince their unsuspecting love interest that they urgently need cryptocurrency to fund an emergency.
Ransomware, once on the decline regarding cryptocurrency, began gaining traction in 2023. This is a category of techniques where thieves might encrypt files or data and demand cryptocurrency, or resort to intimidation tactics unless they are paid.
In some cases, thieves may use a combination of these tactics to achieve their goals. For example, they might pose as a romantic interest and then demand cryptocurrency to fund an emergency.
Ice Phishing
Ice phishing is a sneaky attack that accounted for 55.8% of all attacks in May. It's a type of phishing that doesn't aim directly for users' private information.
An ice phisher tricks a victim into signing a malicious blockchain transaction that opens access to their wallet, allowing the attacker to steal all the money. This is often done by luring victims onto a phishing website designed to mimic real crypto services.
Victims are often tricked into interacting with various decentralized applications, including decentralized exchanges, by creating an illusion of a new lucrative opportunity. This can exploit the common tendency to fall for FOMO, or the fear of missing out.
Users can fall victim to ice phishing by signing a token approval transaction without checking what they're signing up for. This can happen when users are prompted to click, click, click and transactions pop-up, often with a timer.
In a variation of the ice phishing attack, users are tricked into sending native assets directly to the scammer by signing a 'security update' function of the scammer's contract.
NFTs, Airdrops and Address Poisoning
NFTs, Airdrops and Address Poisoning are types of attacks that target traders of non-fungible tokens (NFTs). These attacks often take advantage of quirks in NFT infrastructure, like the Seaport protocol used across many NFT marketplaces.
Attackers study the transaction history of their victims' wallets and look for addresses they interact with the most to create a fake address that would look familiar to their target. This is known as "address poisoning."
Scammers use recognizable brands when designing social engineering exploits to earn victims' trust or attention. For example, an attacker airdropped a supposedly new token to Chainlink (LINK) holders, including an offer to exchange it for actual LINK tokens on a phishing website.
Attackers can allocate fraudulent ERC-20 tokens to a legitimate smart contract and then execute a function that transfers those fake tokens to anyone that holds a targeted token. This makes it look like users got an airdrop from the legitimate contract, while it's nothing but a scam.
To avoid these attacks, it's essential to be cautious when receiving unsolicited transactions or airdrops. Always verify the authenticity of the transaction and be wary of offers that seem too good to be true.
Wallet Security
Crypto wallet security is a top priority. Private keys, the backbone of cryptocurrency, are vulnerable to theft if not stored properly.
A private key can be decrypted, but the number of possibilities is so vast (115 quattuorvigintillion) that it would take centuries to brute force the encryption with current technology.
To protect your funds, create a new wallet and migrate your funds to it, setting up a new wallet address and backing up your secret phrase securely. This is crucial because anyone with your secret phrase has full access to your funds.
Use reputable antivirus and anti-malware software to scan your devices for malware and security threats, removing any security threats to prevent further attacks on your new wallet.
A non-custodial wallet gives you control over your private keys and cryptocurrency holdings, but you're solely responsible for remembering your private keys and maintaining security measures to protect your funds.
To physically secure your keys, consider using a hardware wallet, writing your private keys on paper and locking it in a vault, or using a non-custodial wallet with multisig protection. This way, multiple keys are required to access and move your cryptocurrency, making it more secure.
Wallet Security
If you forget your private keys, you will be unable to access your cryptocurrency, so it's crucial to remember them.
You're fully responsible for remembering your private keys and maintaining security measures to protect your funds when using a non-custodial wallet service.
Hardware wallets are physical devices that store your keys offline and are widely considered to be the safest option to store private keys.
Many hardware wallets look similar to a USB stick, but it's essential to use a trusted hardware provider and secure your hardware wallet in a safe place.
Hot wallets, or those connected to the internet, are considered to be much more risky than cold wallets, as they can be hacked while you're sleeping.
To physically secure their keys, some investors use a hardware wallet, while others write their private keys on paper and lock it in a vault.
Multisig, or multi-signature, protection is also an option with non-custodial wallets, requiring multiple keys to gain access and move cryptocurrency.
Each key is held on a different device, typically a mix of your phone and offline hardware wallets, that are stored in different locations.
You need to find some way to back-up your key in case you lose it, so that you don't lose all your crypto from a mistake.
Check for Malware and Security Threats
To keep your digital wallet secure, it's essential to check your devices for malware and security threats. Run a thorough scan using reputable antivirus and anti-malware software to detect any potential issues.
Malware can compromise your wallet's security, so it's crucial to remove any security threats you find. Ensure your device is free from malware or security vulnerabilities to prevent further attacks on your wallet.
Regular scans can help identify and eliminate malware, giving you peace of mind and protecting your financial information. You can also update your operating system and browser to the latest versions to stay protected.
Removing any security threats will help prevent further attacks on your new wallet, so take the time to thoroughly scan your devices.
Protecting Your Wallet
A private key can be decrypted, but it would take centuries to brute force the encryption with current technology. This is why hackers often target wallets, where private keys are stored.
To protect your wallet, be aware of bad actors in the cryptocurrency space. A common scam is sim swapping, where a hacker convinces your phone company to transfer your phone number to theirs. This can allow them to bypass two-factor authentication.
Use a YubiKey, a hardware authentication key that can be plugged into a device, for the gold standard in two-factor authentication. Also, use password managers and never reuse the same password across your accounts.
Here are some tips to keep your wallet secure:
- Set up a new wallet and backup your secret phrase securely.
- Transfer any remaining funds in the compromised wallet to your new wallet's address.
- Do not reuse the compromised seed phrase, password, or any associated credentials from the previous wallet.
Keep your seed phrase completely private and in a secure location offline, and remain skeptical when receiving outside messages regarding your crypto wallet. If it's too good to be true, it probably is.
Transaction Hygiene
Transaction hygiene is crucial to protect your wallet from hackers and scammers.
Ideally, wallets should have security features built in to prevent fraudulent activities.
Hackers and scammers are getting more industrious, so it's essential to pay attention to the addresses your wallet interacts with.
Forta provides its database of fraudulent addresses to the ZenGo wallet to help prevent scams.
Forta assigns blockchain wallets different risk scores based on their involvement in potential scammy behavior.
This helps identify wallets that may be involved in suspicious activities.
Machine learning models and detection bots monitor transactions in real time, looking for specific conditions and behaviors, such as contracts with lines like "security update" in their code.
How to Protect
Protecting your wallet is crucial, and there are several steps you can take to do so. Be aware of bad actors in the space, and a common scam is sim swapping. A hacker can call your phone company and convince them to transfer your phone number to theirs, making it difficult to protect your account.
To avoid this, never use SMS text message for two-factor authentication if you can help it. If you can't avoid it, call your carrier and ask to add a password or other barrier to your account. Using a YubiKey is also recommended, as it's the gold standard for two-factor authentication.
Keep your seed phrase completely private and in a secure location offline. A seed phrase is a collection of 12 to 24 random words that can be used to recover your crypto wallet. If you receive outside messages regarding your crypto wallet, be skeptical, especially if it's too good to be true.
Here are some tips to help you protect your wallet:
- Use a password manager to create and store unique and strong passwords.
- Set up a new wallet and backup your secret phrase securely.
- Transfer any remaining funds in the compromised wallet to your new wallet's address.
- Use a secure method for two-factor authentication, such as a YubiKey.
- Keep your seed phrase completely private and in a secure location offline.
Review your online accounts and passwords regularly to ensure they haven't been compromised. If you've saved your wallet's secret phrase on your Google Drive, for example, and your Google account password was exposed via a data breach, change your passwords and enable two-factor authentication wherever possible.
Frequently Asked Questions
Can you recover if your crypto wallet is lost, hacked, or stolen?
Recovering stolen cryptocurrency is possible, but it's often a complex process that may involve investigating the transaction trail and contacting the custodial service where the funds were sent
Which type of crypto wallet is the most vulnerable to hackers?
Hot wallets are more vulnerable to hackers due to their internet connectivity, making them a higher risk for cyber attacks
Sources
- https://www.investopedia.com/articles/investing/032615/can-bitcoin-be-hacked.asp
- https://finshots.in/archive/can-we-avoid-another-wazirx-style-hack/
- https://www.coindesk.com/consensus-magazine/2023/06/22/social-engineering-ice-phishing-and-more-how-scammers-can-drain-your-crypto-wallet
- https://www.cnbc.com/2021/06/11/tips-to-help-keep-your-crypto-wallet-secure.html
- https://support.trustwallet.com/en/support/solutions/articles/67000722183-what-to-do-if-your-wallet-is-compromised
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