Invitation Emails Used to Steal Logins & Install RATs

Cofense · Medium sophistication
Last updated August 12, 2026

Cofense reports a sustained rise in real phishing campaigns disguised as party/event invitations that trick people into clicking links. The same invitation lure is being used both to steal usernames/passwords via fake login pages and to install legitimate-but-abused remote access tools that give attackers control of a computer. Some campaigns even change what victims receive based on whether they click from a desktop, Mac, or mobile device.

Key findings

  • Invitation-themed emails are being used in real campaigns to deliver both credential phishing pages and remote access malware.
  • Attackers spoof well-known invitation brands (Punchbowl, Greenvelope, Paperless Post, Evite) and rely on curiosity and emotional triggers to get clicks.
  • Some campaigns use device-detection so the same link can deliver different payloads to Windows, macOS, or mobile users from a single URL.
  • Polished design and branding can be indistinguishable from legitimate invitations, making appearance-based trust unreliable.
  • Abused legitimate remote tools (e.g., ConnectWise RAT/ScreenConnect, Datto RMM) can slip past defenses because they are commonly used by IT teams.

Who’s being targeted

  • Commonly targeted roles: All employees, Executives, Finance, HR, IT/Helpdesk.
  • Attack channels: email, website.
  • Impersonated: Punchbowl (spoofed invitation platform), Evite (spoofed invitation platform), Paperless Post (spoofed invitation platform).

Awareness takeaways

  • Treat unexpected invitations as risky, even if the branding looks perfect, and verify via a separate, known-good method.
  • Be cautious of emotionally charged subject lines designed to create urgency or curiosity (“don’t miss out”, “friends and family”).
  • Assume a single link can lead to different outcomes (credential theft on mobile, malware on desktop). Avoid clicking and report it.
  • Harden controls around remote access tools and don’t install unexpected “support” or “viewer” software prompted by an email.

Red flags to watch for

  • Subject line pressures a specific device use (e.g., “for desktop only”)
  • Unexpected invitation, possibly using a familiar name to reduce suspicion
  • Clicking leads to download behavior rather than simply viewing event details
  • Emotional language meant to override normal caution (e.g., “friends and family”)
  • Unexpected invitation from outside normal work context
  • Link click leads to software/tool delivery rather than a normal RSVP page
  • Same link behaves differently depending on device (unexpected redirects/downloads)
  • Mobile click prompts for credentials unrelated to a normal invitation flow
  • Invitation appears highly polished, making brand/visual checks unreliable
Try Mirage

Mirage safely runs attacks like this one against your own team, so you find out what happens before a real adversary does.

Get a demo
Read the video transcript

You get a Punchbowl invite: “Birthday party – for desktop only.” Looks legit, nice graphics… and that’s the trap. Cofense is seeing real campaigns spoofing Punchbowl and Evite where that “View Invitation” link either steals your login or quietly installs a remote access tool like ConnectWise or Datto RMM. Here’s the aha: one shiny invite link can do device-detection, on your phone it shows a fake login page, on your Windows laptop it drops a RAT that gives someone full control of your machine. If you get an unexpected invite, especially “for desktop only” or “friends and family” at work, don’t click. Screenshot it and report it through our phishing reporting button.

Similar attacks

Phishing Installs “Legit” Remote Tools in 2 Stages

Phishing Installs “Legit” Remote Tools in 2 Stages

Cofense reports real phishing campaigns where attackers trick employees into installing legitimate remote access tools (like GoTo, Datto RMM, SimpleHelp, and ConnectWise). After the first tool is installed, it contacts a command-and-control server that directs it to download additional remote tools…

July 29, 2026
Fake Anthropic Preview Steals Work Logins

Fake Anthropic Preview Steals Work Logins

Threat actors sent fake invitations to an exclusive Anthropic AI preview to steal Google and Microsoft work credentials. The campaign abused trusted services, including GoTo Webinar and a URL shortener, then used CAPTCHA pages and convincing fake login screens to make detection harder. Employees…

October 29, 2026
Microsoft Busts Phishing Kits Behind 1B Scams

Microsoft Busts Phishing Kits Behind 1B Scams

Microsoft and partners disrupted three "phishing-as-a-service" kits that enabled criminals to send more than a billion phishing emails and SMS messages worldwide. The kits provided ready-made fake brand pages (government, finance, logistics, consumer brands) designed to steal login credentials and…

October 15, 2026
Calendar Invites Used to Steal Logins

Calendar Invites Used to Steal Logins

Attackers are sending calendar invitations that auto-appear in tools like Google Calendar, tricking people into clicking links or calling “support” numbers. The calendar event often mimics voicemails, payment receipts, or auto-renewals and leads to fake login pages (Microsoft/Google/PayPal) or…

October 11, 2026
New Unicode Trick Makes Fake URLs Look Real

New Unicode Trick Makes Fake URLs Look Real

Researchers demonstrated how attackers can register lookalike web domains using two specific Unicode characters that Chromium-based browsers may display as trustworthy, normal-looking URLs. This can make phishing and typosquatting sites appear legitimate to employees, increasing the chance they…

October 10, 2026
Fake AI Ad Portals Steal Logins and MFA Codes

Fake AI Ad Portals Steal Logins and MFA Codes

Researchers uncovered a human-run phishing platform that pretends to be ad-management products for popular AI brands (ChatGPT, Gemini, Claude, and others). Victims are pushed to click a “Connect” flow that opens a convincing fake login window (showing trusted domains like accounts.google.com) to…

October 6, 2026