Is it legal to mine Monero on my work computer?

Mining Monero on your work computer is not automatically illegal, but you should not do it without clear permission from your employer. Whether it is allowed depends on local law, your workplace’s rules, and who has authority to approve using the computer, electricity, and network for mining.

A work login is not permission to mine

Mining uses a computer’s processing power to help secure Monero’s payment network in exchange for a chance to earn cryptocurrency. On a work computer, that means using resources your employer usually pays for.

Being allowed to use a laptop for personal browsing does not necessarily mean you can use it to earn money. The same applies if:

• The computer is assigned only to you.
• You mine during lunch or after work.
• You run it at home while plugged into your own electricity.
• You use a browser rather than install mining software.

Browser mining still uses the computer’s processor. “No installation needed” does not mean “approved for work.”

Even on your own laptop, mining through your employer’s network or using workplace electricity may require permission. Ownership is only part of the question.

Breaking workplace rules is different from breaking the law

Your employer may prohibit mining under its acceptable-use policy—the rules for using workplace technology. Breaking that policy can lead to disciplinary action or dismissal, even when it does not amount to a crime.

Depending on local law and the circumstances, unauthorized mining could also raise legal issues involving unauthorized computer use, misuse of company resources, or electricity theft. None of those labels applies automatically everywhere.

The risk becomes more serious if you hide the activity, bypass security controls, use someone else’s account, or continue after being told to stop. Some locations also restrict cryptocurrency mining itself.

For a legal answer you can rely on, check local rules or speak with a qualified lawyer. An employer’s permission does not override the law.

Get approval from someone who can actually give it

Before starting, ask IT or information security which approval process applies. Your manager’s informal “sure” may not be enough if company policy requires authorization elsewhere.

Get written approval that clearly covers:

• The specific device and mining software or website.
• Whether personal earnings are allowed and who keeps them.
• When mining may run and any processor-use limits.
• Electricity, network access, and security requirements.
• Any restrictions involving customer equipment or rented cloud computers.

Do not assume an exception for idle computers. Your employer may reserve unused capacity for updates, backups, or other work.

If the answer is unclear, do not mine until it is settled.

Consider security and what to do if you already started

Mining can increase power use, heat, fan noise, and slowdowns. It may also trigger workplace security alerts because attackers sometimes secretly mine on compromised computers.

Treat a mining service that tells you to disable antivirus, hide activity from IT, or bypass company restrictions as a serious warning sign.

If you have already started without approval, stop mining. Follow your workplace’s reporting process, explain what you ran, and let IT decide whether the device needs checking. Do not erase logs or try to conceal what happened.

The bottom line

Use your work computer for Monero mining only with explicit, properly authorized permission and where local law allows it. Without both, the possible earnings are not worth risking your job or a legal dispute.