Quick answer: A cyber attack is any attempt to break into, disrupt or steal from a computer system, network or account. The most common attacks in 2026 are software vulnerability exploits, phishing and social engineering, stolen credentials, ransomware and business email fraud. Most of them can be stopped with a short list of basics: fast patching, phishing-resistant multi-factor authentication, least-privilege access, locked-down developer and admin machines, tested backups and a written incident response plan. The October 29, 2026 Binance hack, the largest crypto theft on record, shows what happens when one of those basics fails at scale.
On the evening of October 29, 2026, attackers drained about $6.3 billion in crypto from Binance, the world’s largest cryptocurrency exchange. It was roughly four times bigger than the previous record, the $1.5 billion Bybit theft in February 2025. The attackers did not crack any encryption. Binance says the breach likely began with a single compromised engineer’s laptop.
That detail is the real story for every business, not just crypto companies. This guide explains what happened at Binance, the main types of cyber attacks you are likely to face, and the practical steps that prevent them.
What Happened In The Binance Hack?
Here is what is known as of October 30, 2026. The investigation is ongoing and Binance has not yet published a full root cause.
- The scale: Binance puts the total impact at about $6.3 billion. Blockchain analytics firms give slightly different figures depending on how they price the assets: TRM Labs counts about $6.36 billion and Elliptic about $6.43 billion.
- The speed: According to TRM Labs, most of the money left Binance hot wallets on ten blockchains in about 20 minutes, starting at 20:05 UTC.
- The entry point: Binance said its initial investigation points to a compromised DevOps engineer’s laptop, which gave the attacker access to a service container used to submit withdrawal transactions. The company later said it had found additional points of breach and that this was not a simple one-click attack.
- The method: Analysts at TRM and Elliptic believe the attacker did not steal Binance’s private keys. Instead, they got Binance’s own signing systems to approve transactions on their behalf. On Ethereum, the attacker used pre-signed authorizations to turn a Binance hot wallet into a sweeper that kept draining new deposits.
- The suspects: TRM Labs and Chainalysis both attribute the attack with high confidence to TraderTraitor, a North Korean state-backed hacking group that the FBI also blamed for the Bybit theft. Elliptic agrees the tradecraft matches but has urged caution until a root cause is published.
- The recovery: Tether, Circle, Ripple and others froze roughly $2.7 to $3 billion in stablecoins within hours. Binance suspended deposits and withdrawals, said user funds are safe, and pledged to cover all losses from its SAFU emergency fund and its own reserves.
As The Hacker News reported, Elliptic summed up the pattern behind both Binance and Bybit: the cryptography held, but the people and infrastructure around the wallets were compromised. That is the lesson that carries over to every other industry.
What Is A Cyber Attack?
A cyber attack is a deliberate attempt to gain unauthorized access to a system, steal or destroy data, take money, or knock a service offline. Attackers range from lone fraudsters to organized ransomware gangs and state-backed groups like the one suspected in the Binance case.
The cost keeps climbing. IBM’s 2026 Cost of a Data Breach Report puts the global average cost of a breach at a record $4.99 million, and $11.5 million in the United States. Financial services breaches averaged about $6.3 million, second only to healthcare.
The Most Common Types Of Cyber Attacks In 2026
1. Vulnerability Exploitation
Attackers break in through unpatched software: web servers, VPNs, firewalls, content management systems and open source libraries. Verizon’s 2026 Data Breach Investigations Report found that exploited vulnerabilities were the starting point for 31% of breaches, overtaking stolen credentials for the first time in the report’s history. AI tools now help attackers find and weaponize new flaws faster than many companies can patch them.
2. Phishing And Social Engineering
Phishing tricks people into clicking a malicious link, opening an infected file or handing over a password. It remains the leading initial attack vector in IBM’s 2026 report. North Korean groups are known for a targeted version aimed at developers: fake job offers or “coding tests” that install malware on the victim’s work machine. Analysts suspect this kind of lure may have played a role at Binance, as it did in earlier crypto heists.
3. Credential And Identity Attacks
Stolen passwords, session tokens and API keys let attackers log in as a legitimate user, which makes them hard to spot. Techniques include password spraying, credential stuffing with leaked passwords, MFA fatigue (spamming push approvals until someone taps “accept”) and stealing browser session cookies with infostealer malware. Specialist identity threat detection and response (ITDR) companies focus on catching exactly this kind of misuse.
4. Ransomware
Ransomware encrypts a company’s files and systems, and most gangs now also steal data first so they can threaten to leak it. Attacks often start with one of the methods above and spread across the network for days or weeks before the encryption is triggered. Our step-by-step guide on how to handle a ransomware attack covers the response in detail.
5. Supply Chain And Third-Party Attacks
Instead of attacking a target directly, criminals compromise a vendor, software update, plugin or open source package the target trusts. The Bybit theft worked this way: attackers compromised a developer machine at a wallet software provider and manipulated the transactions Bybit’s own staff approved.
6. Business Email Compromise And Deepfake Fraud
Business email compromise (BEC) uses a hijacked or spoofed email account to trick finance teams into paying fake invoices or changing bank details. Attackers now add AI-cloned voices and deepfake video calls that impersonate executives. We cover the warning signs in our guide to deepfake CEO fraud.
7. Insider And Privileged Machine Compromise
Engineers, administrators and DevOps staff hold the keys to production systems. If one of their laptops is compromised, the attacker inherits that access. Binance is the clearest example yet: a single workstation appears to have opened a path to systems that could move billions of dollars.
8. Denial-Of-Service (DDoS) Attacks
DDoS attacks flood a website or service with traffic until it goes offline. They are often used for extortion or as a distraction while another attack runs in the background.
9. Attacks On AI Systems
As companies connect AI assistants and agents to email, files and internal tools, attackers target them with prompt injection, data poisoning and stolen API keys. IBM found AI-driven attacks rose sharply in 2026 and add roughly $1 million to the average breach. See our list of AI security companies protecting LLMs and AI agents.
How To Prevent Cyber Attacks: 12 Steps That Work
1. Patch Fast, Starting With Internet-Facing Systems
Keep an inventory of every system and application you run, and patch anything exposed to the internet first. Critical flaws in VPNs, firewalls and web apps should be fixed in days, not on a monthly cycle. Automated vulnerability scanning helps you find what you missed.
2. Use Phishing-Resistant Multi-Factor Authentication
Passwords alone are not enough. Turn on MFA everywhere, and for admins, finance staff and engineers use phishing-resistant methods such as hardware security keys or passkeys instead of SMS codes or push approvals.
3. Lock Down Developer And Admin Machines
Treat the laptops of people with production access as high-value targets. Use managed devices with endpoint detection and response (EDR), block personal software installs, and never run code from an unknown “job test” or side project on a work machine. For the most sensitive tasks, use dedicated, locked-down workstations that are used for nothing else.
4. Apply Least Privilege And Separate Duties
Give every person and service only the access it needs, for only as long as it needs it. Critical actions, such as moving funds, changing payment details or deploying to production, should require approval from more than one person through separate systems. One compromised account should never be able to do catastrophic damage on its own.
5. Segment Your Network And Secrets
Split systems into zones so an attacker who gets into one area cannot move freely. Store API keys and credentials in a secrets manager, rotate them regularly, and keep the most sensitive systems isolated from everyday corporate IT.
6. Train People Against Real-World Lures
Generic annual training does little. Run regular, realistic phishing simulations and teach staff the specific scams aimed at their role: fake invoices for finance, fake recruiters for engineers, fake executive calls for assistants. These security awareness training companies run programs built around current attacks.
7. Secure Email And Verify Payment Requests
Set up SPF, DKIM and DMARC to stop attackers spoofing your domain, and use advanced email filtering. Any request to change bank details or send an urgent payment should be confirmed through a second, known channel, such as a phone number already on file. See our list of email security and BEC prevention companies.
8. Monitor Continuously And Alert On Anomalies
Most of the Binance theft happened in about 20 minutes. You cannot respond to what you cannot see. Centralize logs, monitor for unusual logins, privilege changes and large transfers, and make sure someone is watching around the clock, either in-house or through a managed detection and response provider. IBM found organizations that use security AI and automation extensively cut breach costs by about $1.9 million on average.
9. Vet Your Vendors And Software Supply Chain
Ask key vendors about their security controls, limit the access each one has to your systems, and review third-party code and dependencies before deploying them. Your security is only as strong as the least protected company you trust.
10. Keep Immutable, Tested Backups
Backups that ransomware can reach are not backups. Keep at least one copy offline or immutable, and test restores regularly so you know how long recovery actually takes. Compare options in our list of immutable backup and ransomware-proof recovery providers.
11. Test Your Defenses Like An Attacker
Regular penetration tests and red team exercises find the gaps before criminals do. Include social engineering and insider-style scenarios, not just scans of your website.
12. Write And Rehearse An Incident Response Plan
Decide in advance who does what when an attack hits: who can shut systems down, who talks to customers and regulators, and which outside firms you will call. Binance’s ability to suspend withdrawals within hours limited the damage. Our guide to data breach response plans walks through building one.
Crypto Security Lessons From The Binance Hack
For Exchanges, Fintechs And Crypto Businesses
- Protect the signing infrastructure, not just the keys. In both Binance and Bybit, attackers got legitimate systems to sign malicious transactions. Signing services need the same scrutiny as private keys.
- Keep hot wallet balances small. Hold most funds in cold storage and cap how much any hot wallet can send in a set period.
- Separate signing by chain and wallet tier. TRM noted that one actor obtained valid signatures for wallets on ten chains within hours. Isolation would have limited the blast radius.
- Watch for unexpected wallet delegations. Reject EIP-7702 authorizations unless they are expected, alert on any delegation on a treasury wallet, and keep a tested way to revoke one fast.
- Audit smart contracts and wallet code. Independent review catches flaws before attackers do. Compare providers in our list of smart contract auditing firms.
- Screen counterparties in real time. Market makers and payment providers that screen addresses before large trades can stop stolen funds from being laundered.
Businesses that accept crypto should also choose providers with strong security track records. Our roundup of crypto payment processors for businesses is a good starting point, and banks and fintechs can compare specialist cybersecurity companies for banks and credit unions.
For Individual Crypto Holders
- Exchange balances are only as safe as the exchange. Keep long-term holdings in a hardware wallet you control, and only keep trading funds on exchanges.
- Use a hardware security key or authenticator app on every exchange account, never SMS alone, and turn on withdrawal address allowlists.
- Expect scams after every big hack. Fake “Binance support” messages, refund offers and recovery services will target worried users. Only trust updates from the exchange’s official channels.
- Remember that crypto held on an exchange is not insured like a bank deposit. Binance has pledged to cover these losses, but not every platform can.
What To Do If Your Business Is Attacked
- Contain it. Isolate affected machines and accounts, revoke compromised credentials and pause risky operations, as Binance did with withdrawals.
- Preserve evidence. Do not wipe systems before logs and disk images are captured.
- Call in help. Bring in an incident response firm, your cyber insurer and legal counsel early. Our list of incident response companies covers firms that handle breaches around the clock.
- Notify the right people. Report to law enforcement and meet any regulatory deadlines for notifying customers and authorities.
- Recover and harden. Restore from clean backups, fix the root cause and update your controls so the same path cannot be used again. If ransomware is involved, specialist ransomware recovery companies can help.
When To Work With A Cybersecurity Company
Few organizations can staff every security role in-house. Outside help makes sense when you handle money or sensitive data, when you lack 24/7 monitoring, when you face compliance requirements, or when you have never had an independent assessment. Depending on your size and sector, start with these:
Frequently Asked Questions
What Is The Most Common Type Of Cyber Attack?
Phishing and social engineering remain the most common way attacks begin, according to IBM. Verizon’s 2026 data shows software vulnerability exploitation is now the leading entry point for confirmed breaches, at 31%.
How Was Binance Hacked?
Binance’s early findings point to a compromised DevOps engineer’s laptop that gave the attacker access to a service container used to submit withdrawals, plus additional breach points still under investigation. Analysts believe the attacker made Binance’s own signing systems approve transactions rather than stealing private keys.
Who Was Behind The Binance Hack?
TRM Labs and Chainalysis attribute it with high confidence to TraderTraitor, a North Korean state-sponsored group. Elliptic sees similar tradecraft but has said attribution should wait for a confirmed root cause.
Can Small Businesses Prevent Cyber Attacks?
Yes. Most attacks on small businesses rely on unpatched software, weak passwords or phishing. MFA, automatic updates, email filtering, staff training and offline backups stop the majority of them at low cost.
Is My Crypto Safe On An Exchange?
It is only as safe as the exchange’s security and its ability to cover losses. Funds on exchanges are not insured like bank deposits. For long-term holdings, a hardware wallet you control is the safer option.
Conclusion
The Binance hack broke every record for size, but not for complexity of entry. A single compromised machine, combined with systems that trusted it too much, was enough. The same is true for most cyber attacks: they succeed through unpatched software, stolen access and people who were targeted well. Patch quickly, protect privileged users and devices, limit what any one account can do, monitor around the clock and have a plan ready before you need it. If you lack the in-house team to do that, the right cybersecurity partner is far cheaper than the average $4.99 million breach.
