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tip based on GMO Internet's Desktop Cloud breach guidance (Oct 23-24)

Tip: if a hosted desktop running your trading bot is breached, changing the password is not enough; kill every broker session too

GMO's guidance after the Desktop Cloud breach makes a point that applies to any VPS running MT4/MT5, crypto bots or other always-on trading tools: some brokers keep existing connections alive after a password change, so an attacker can keep trading.

  • Change the password from a device that never touched the VPS, then use the broker's portal or support line to end all sessions.
  • Use investor (read-only) passwords wherever a tool only needs to watch, and keep trading passwords off the VPS when you can.
  • Turn on 2FA and withdrawal allow-lists at every broker or exchange the bot touches.
  • Treat the VPS as a shared-tenant system you do not control: do not save browser passwords, email logins or seed phrases on it.

Sources: GMO Internet: 3rd report, timeline and scope (Oct 23, Japanese) · GMO Internet: 4th report on the Desktop Cloud cyberattack (Oct 24, Japanese)