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Today β€” 29 October 2026KnowBe4 Security
Before yesterdayKnowBe4 Security

Attackers Abuse Legitimate Infrastructure to Distribute Phishing Emails

27 October 2026 at 12:00

Researchers at Cisco Talos are tracking a significant increase in phishing campaigns that abuse legitimate platforms. Attackers abused more than 25 legitimate services over the past year, including β€œcollaboration, productivity, file-sharing, survey, payment and AI-related platforms.”

In two campaigns, attackers used order notifications from Staples and Dell to distribute phishing messages. The organizations themselves were not compromised, but the threat actors inserted phishing content into the fields that were supposed to contain shipping information.

Warning: Attackers Are Using Calendar Invite Files to Evade Security Filters

23 October 2026 at 12:00

Phishing attacks are increasingly using legitimate calendar invites to bypass security filters, according to researchers at Netcraft. Attackers send ICS calendar invite files that plant phishing lures directly on users’ calendars, often under the guise of work-related meetings.

Warning: Calendly Phishing Pages Are Targeting Job Seekers

22 October 2026 at 09:00

Researchers at Malwarebytes warn that a phishing campaign is using spoofed Calendly pages to trick users into handing over their Facebook and Google account credentials. The phishing sites pose as Calendly booking pages for job interviews at Meta, asking users to enter their information to sign up for a phone call with a recruiter.

Phishing Attacks Target YouTubers With Phony Sponsorships

16 October 2026 at 16:00

A phishing campaign is targeting YouTubers with phony sponsorship offers, according to researchers at ESET. The emails are personalized to each target, making specific references to their channels, and are designed to trick users into granting access to their Google accounts.

NIS2 Part Two: How Stolen Vendor Data Fuels Downstream Attacks

16 October 2026 at 11:00

In part one of this NIS2 series, we examined why vendor questionnaires fall short and how third-party breaches impact downstream organizations across Europe. But what happens after a supplier containment phase ends? The long-term danger lies in how attackers leverage exfiltrated supplier data to launch hyper-targeted social engineering attacks against an organization’s employees.

Report: 9 out of 10 Americans Have Been Targeted by Scams

15 October 2026 at 09:00

91% of Americans have been targeted by a scam, and 17% have fallen victim to one, according to a new survey by Consumer Reports. Notably, 20% of respondents said the latest scam they encountered was personalized, indicating that attackers are increasingly using automation and public or leaked information to craft targeted phishing attacks.

Warning: Phishing Attacks Are Using AI-Themed Ad Lures

14 October 2026 at 12:00

A phishing campaign is using AI-themed lures to target employees who operate advertising accounts, according to a new report from Island. The campaign is launched from a phishing platform that poses as a portfolio of AI advertising tools, using branding from Gemini, Claude, ChatGPT, Perplexity, and Muse. The platform’s operator added a fake Muse Ads lure eight days after Meta launched its Muse AI agent.

[Cybersecurity Awareness Month] Trust, but Verify: Navigating the Era of AI Deepfakes

12 October 2026 at 09:16

The digital landscape faces a new and complex challenge: the rise of generative AI. While these tools offer incredible potential for innovation, they also provide malicious actors with sophisticated ways to deceive even the most vigilant users.

Warning: Attackers Are Tricking Employees Into Sharing Malicious Calendar Invites

7 October 2026 at 09:00

Researchers at Fortra are tracking a new variant of calendar phishing in which threat actors trick employees into sharing meeting links internally.

The attackers pose as prospective customers and contact non-sales employees, asking to be directed to a sales representative in order to discuss a business opportunity. The attacker then sends the employee a meeting link to forward to a sales contact.

Warning: Tech Support Scams Are Abusing Google Ads

6 October 2026 at 12:00

Researchers at Netskope are tracking a phishing kit that hijacks users’ browser windows to display fake security alerts. The malicious websites are distributed via Google Ads, and pose as normal online stores. Once a user clicks a link on the page, however, the site will present them with an urgent-looking security warning.

Warning: New Phishing Kit Targets Sales Teams

25 September 2026 at 16:00

Threat actors are using a new phishing kit called β€œGhostCode” to target sales teams with phony business inquiries, according to researchers at eSentire. The threat actors begin the attack using the targeted company’s web contact form, so the messages won’t be blocked by security filters.

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