While this is not an exhaustive list there are some basic steps that can be taken to protect a company from online attacks and potential frauds. Ensure that your system is properly protected by Antivirus and Anti-Malware software and that they are up to date. Discuss needs with a system administrator or an external security company.Ensure robust processes are in place for payment authorisations, in particular those involving any change to payee bank account details. This could include two step authorisation where a second member of staff must sign off on any change or confirm the request. Or it could require the person processing the payment to check with the CEO or other senior executive that the payment and change is authorised.If large sums of money are being regularly transferred from company accounts, an account manager with your Bank may take a proactive role where changes are requested to payee account details.