Data breach

Monex Securities

Location not known1 source

ReportedReported by the press on 14 Nov 2026. Monex Securities has not confirmed it.

Monex Securities: data breach reported

News coverage reports a data breach affecting Monex Securities.

See it on the live map Am I affected?

Location not known.

First reported: 14 Nov 2026
Latest source: 14 Nov 2026

What is known

Confirmed

No confirmed figure

Claimed

No claimed figure

Data involved

Data types not stated

Cause

Cause not stated

First seen by Black Shard: 14 Nov 2026

Sources

tokyoreporter.comPress report14 Nov 2026tokyoreporter.com

Status timeline

14 Nov 2026
tokyoreporter.com, press report
14 Nov 2026
Status: reported

What to do

If you have an account, change that password, and anywhere you reused it.
Turn on two-factor authentication, ideally an authenticator app or passkey, not SMS.
Expect phishing that uses your real details. Do not click links in messages about this incident; go to the company's site directly.
If payment cards were involved, watch statements and ask your bank for a new card.
If government ID or social security numbers were involved, consider a credit freeze.

Talk to our team 24/7 incident line: 1800 370 270

How sure we are

That it happened as stated 50%

The place 0%

1 independent source. Location not known.

Not known yet

Attack dateNumber of recordsData involvedWho did itA statement from the organisation

Update log

14 Nov 2026First seen.

Under attack? Call the incident line.

Black Shard's team can check your exposure, take a fix off your plate or step in on a live incident.

Talk to our team Breach response

24/7 incident line1800 370 270Call first, then work through the first-hour steps.