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.

Threat Spotlight: How company size affects the email threats targeting your business

Threat Spotlight: How company size affects the email threats targeting your business

It takes less than a minute for someone to fall for a phishing scam. According to the 2024 Data Breach Investigations Report, the median time for a recipient to click on a malicious link after opening the email is 21 seconds, followed by...

/ July 30, 2024
QR code phishing: What MSPs need to know to protect their customers

QR code phishing: What MSPs need to know to protect their customers

In today’s digital age, the use of technology continuously evolves to make our personal and professional lives more convenient. Quick Response (QR) code has been one such advancement. This two-dimensional barcode allows users to share website URLs and contact information...

/ April 12, 2024
AI
Five ways cybercriminals use AI to wreak havoc

Five ways cybercriminals use AI to wreak havoc

It seems that each time there is a new technology advancement, criminals quickly cut to the front of the line when it comes to dreaming up new applications. That is the case with generative artificial intelligence (AI), which has been...

/ February 29, 2024
The three email threat types that are hardest for users to detect

The three email threat types that are hardest for users to detect

There’s a question that all organizations need to be asking themselves when it comes to securing their email security posture: Do my users know how to distinguish between a legitimate email and an email threat? Some businesses are able to invest...

/ January 18, 2024
energy and utilities
Email-borne attacks hit energy and utilities harder than most other sectors

Email-borne attacks hit energy and utilities harder than most other sectors

The energy and utilities industry is part of the world’s critical infrastructure. Without reliable access to electricity, natural gas, renewables, water supplies, and more, many things we rely on will grind to a halt with potentially devasting consequences for companies,...

/ October 24, 2023
Quishing: What you need to know about QR code email attacks

Quishing: What you need to know about QR code email attacks

In today’s digital age, the use of technology continuously evolves to make our personal and professional lives more convenient. Quick Response (QR) code has been one such advancement. This two-dimensional barcode allows users to share website URLs and contact information...

/ October 10, 2023
novel phishing attacks
Threat Spotlight: 3 novel phishing tactics

Threat Spotlight: 3 novel phishing tactics

As cybercriminals work to make phishing attacks more effective, they are continually introducing new techniques and tactics to try to trick victims, bypass security, and avoid detection.

/ March 17, 2023
How hackers use phishing in ransomware attacks

How hackers use phishing in ransomware attacks

Phishing attacks work because people like to click on things. Hackers carefully tailor attacks to their victims by collecting publicly available personal information about them and playing to their sense of urgency to get a response. The attackers only need...

/ October 12, 2021 / 1 Comment
Coronavirus fraud: companies face new phishing attacks

Coronavirus fraud: companies face new phishing attacks

As Coronavirus COVID-19 makes its way across the world, individuals are doing their best to stay up-to-date on the latest outbreak locations and confirmed cases. Hackers have created new attacks based on the public interest in this virus.

/ March 17, 2020