Olesia Klevchuk

All posts by Olesia Klevchuk

Olesia Klevchuk is a Senior Product Marketing Manager for email security at Barracuda Networks. In her role, she focuses on defining how organizations can protect themselves against advanced email threats, spear phishing and account takeover. Prior to Barracuda, Olesia worked in email security, brand protection, and IT research.

XDR
Stop AI-driven attacks: Why MSPs can’t afford to sell email security without XDR

Stop AI-driven attacks: Why MSPs can’t afford to sell email security without XDR

Email protection and extended detection and response (XDR) are rapidly becoming a foundational pairing for modern cybersecurity, empowering organizations to proactively counter sophisticated threats, maximize their security ROI and streamline operations in a complex digital landscape. As cybercriminals embrace advanced...

/ October 15, 2025
MSPs: Stop account takeovers (ATO) cold

MSPs: Stop account takeovers (ATO) cold

Account takeover (ATO) cyberattacks are a particularly pernicious and challenging threat to combat. They have only grown more complex as credential management becomes increasingly intricate across organizations. According to a recent Barracuda 2025 Email Threats Report, 20% of companies experience...

/ August 6, 2025
MSPs
MSPs: Unmask 2025’s stealthiest email threats and fortify client defenses

MSPs: Unmask 2025’s stealthiest email threats and fortify client defenses

Managed Services Providers (MSPs) stand on the front lines of cybersecurity, and with email-based attacks continuing to surge in volume and sophistication, your role in protecting clients has never been more critical. Email remains the primary conduit for most cyber...

/ July 1, 2025
Email
Email scams: A year-round challenge for businesses of all sizes

Email scams: A year-round challenge for businesses of all sizes

In today’s rapidly changing digital landscape, businesses and consumers face a constant stream of cyberthreats – not just during peak periods like tax season, back-to-school, and holiday shopping, but all year. In fact, according to Barracuda’s 2025 Email Threats Report,...

/ June 9, 2025
email security
Email security under siege: How MSPs can win the war against phishing

Email security under siege: How MSPs can win the war against phishing

Phishing attacks are no longer the clumsy attempts of the past. They’re evolving at an alarming rate, forcing managed service providers (MSPs) to radically adapt their email security strategies to protect their customers effectively. Automated phishing tools, the weaponization of...

/ May 5, 2025
The importance of flexible deployment in email security solutions

The importance of flexible deployment in email security solutions

Companies are facing an increasing array of sophisticated threats, particularly through business email channels. These threats can disrupt operations, expose sensitive data, and cost the companies millions of dollars in recovery costs, compliance penalties, and lawsuit settlements. This adds to any...

/ February 17, 2025
DMARC
Why DMARC is essential for email security

Why DMARC is essential for email security

As advanced security solutions make it more challenging for traditional malware and other attacks to succeed, cybercriminals are increasingly turning to domain spoofing and artificial intelligence (AI) to create more sophisticated and convincing phishing attacks. Recently, the North Korean cybercrime...

/ February 11, 2025
Automated incident response – efficiency at scale

Automated incident response – efficiency at scale

No matter how robust your email security measures are, some threats will inevitably bypass initial defenses. Whether it’s a sophisticated phishing attack or an emerging malware variant, the ability to swiftly detect and respond to post-delivery threats is critical for...

/ January 16, 2025
email security
AI-powered email security: How AI enhances integrated cloud email security

AI-powered email security: How AI enhances integrated cloud email security

Barracuda recently launched new email protection plans that enable customers to fully defend their email environments with security tailored to their specific needs. Our first post in this series defined and explained the components necessary to defend against modern threats. In this post,...

/ January 8, 2025
holiday email scams
’Tis the season to avoid holiday email scams

’Tis the season to avoid holiday email scams

Beware of common holiday email scams. As the holidays approach, businesses are busier than ever, and cybercriminals know it. Along with cheer, joy, and giving, the holidays also bring an unfortunate surge in cyber scams. As businesses tackle everything from...

/ December 9, 2024 / 1 Comment