OptMsg Breach Breakdown: KDDI
Accounts Impacted: 12,233,087 email addresses confirmed by KDDI (initially estimated at up to 14.22 million) Breach Occurrence Date: June 17,
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OptMsg Release Notes v1.0.9
OptMsg v1.0.7 was released on June23, 2026. Check out the release notes and discover what’s new in the latest OptMsg release.
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OptMsg Release Notes v1.0.8
OptMsg v1.0.8 was released on June 12, 2026. Check out the release notes and discover what’s new in the latest OptMsg release.
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OptMsg Breach Breakdown: LastPass
Accounts Impacted: An undisclosed number of LastPass corporate and personal customer records Breach Occurrence Date: June 2026 Added to Breach
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OptMsg Breach Breakdown: Oxford University
Accounts Impacted: Students, alumni, and recruiters at Oxford, Cambridge, and other GTI-partner universities Breach Occurrence Date: Late May 2026 Added
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Reverse Email Lookup: Safe Ways to Identify Unknown Senders (and Stop Them for Good)
This guide explains safe reverse email lookup methods to identify unknown senders, warns against unverified tools, details email safety tips, and highlights OptMsg’s opt-in system for Inbox control.
Reverse Email Lookup: Safe Ways to Identify Unknown Senders (and Stop Them for Good) Read More »
OptMsg Breach Breakdown: Carnival
Accounts Impacted: Nearly 6 million (5,995,277 individual travelers) Breach Occurrence Date: April 2026 Publicly Confirmed: Late May 2026 Added to
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OptMsg Release Notes v1.0.7
OptMsg v1.0.7 was released on May 28, 2026. Check out the release notes and discover what’s new in the latest OptMsg release.
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What Is Phishing? A Simple Guide to Spot, Block, and Stay Safe
Phishing tricks users by posing as trusted entities to steal data. Recognize red flags, use strong security practices, and consider secure services like OptMsg to block phishing and protect your inbox.
What Is Phishing? A Simple Guide to Spot, Block, and Stay Safe Read More »
OptMsg Breach Breakdown: Trump Mobile
Accounts Impacted: Roughly 10,000 unique customers across about 30,000 orders Breach Occurrence Date: May 2026 Publicly Confirmed: May 22, 2026
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OptMsg Breach Breakdown: Zara
Accounts Impacted: Approximately 197,400 unique customer accounts Breach Occurrence Date: April 2026 Data Published by ShinyHunters: April 22, 2026 Added
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OptMsg Breach Breakdown: Vimeo
Accounts Impacted: Approximately 119,200 unique user accounts Breach Occurrence Date: April 2026 Added to Breach Breakdown: May 2026 The Vimeo
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