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IT ServiSource | Cybersecurity Insight

Authorities are warning that attackers are targeting messaging platforms like Signal and WhatsApp to hijack user accounts — often by exploiting authentication weaknesses and social engineering tactics.

These platforms are widely trusted for secure communication, which is exactly why they’ve become a target. Once an account is compromised, attackers can impersonate users, access sensitive conversations, and even target others within the same network.

For businesses, this creates risk when messaging apps are used for:
• Internal communication
• Sharing sensitive information
• Client discussions
• Authentication or verification processes

Common attack methods can include:
• SIM swap attacks
• Phishing messages or fake login pages
• Social engineering to obtain verification codes
• Compromised devices or accounts

This is why strong authentication and user awareness are critical — especially on platforms that feel “safe” by default.

At IT ServiSource, we help businesses strengthen security across all communication channels through access controls, monitoring, and layered protection strategies. Securing endpoints and user identities is key to reducing this type of risk.

Even secure platforms can be vulnerable if accounts aren’t properly protected.



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FBI, CISA warn of Russian hackers hijacking Signal and WhatsApp accounts The FBI and CISA join European agencies in warning of a widespread, easily scalable social engineering campaign targeting messaging apps.

IT ServiSource | Cybersecurity Insight

PTC has issued a warning about an imminent threat involving a critical remote code ex*****on vulnerability affecting Windchill and FlexPLM systems. Vulnerabilities of this nature can allow attackers to execute commands remotely, potentially gaining control over affected environments.

When exploitation is described as imminent, it usually means attackers are already actively scanning for vulnerable systems. This significantly reduces the time businesses have to respond.

Potential risks include:
• Unauthorized system access
• Data exposure or manipulation
• Service disruption
• Lateral movement within networks
• Full environment compromise

Systems used for product lifecycle management often contain sensitive operational and intellectual property data, making them attractive targets.

At IT ServiSource, we help organisations reduce exposure through proactive vulnerability management, structured patch deployment, and continuous monitoring. Identifying critical updates quickly and applying them in a controlled way helps minimise both risk and disruption.

When threats are active, response time becomes critical — preparation makes all the difference.



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PTC warns of imminent threat from critical Windchill, FlexPLM RCE bug PTC Inc. is warning of a critical vulnerability in Windchill and FlexPLM, widely used product lifecycle management (PLM) solutions, that could allow remote code ex*****on.

IT ServiSource | Cybersecurity Insight

Security experts are warning of a “loud and aggressive” wave of extortion attempts following the recent Trivy-related incident. Attackers are reportedly using stolen data, public pressure, and direct outreach to push organisations into quick payments.

Unlike traditional ransomware, extortion-focused attacks often rely on intimidation rather than encryption. Threat actors may claim to have accessed sensitive data and pressure businesses by threatening exposure, reputational damage, or operational disruption.

These campaigns typically involve:
• Direct emails to executives or staff
• Claims of stolen or leaked data
• Tight deadlines to force quick decisions
• Public exposure threats
• Social engineering to increase pressure

Even when claims are exaggerated, the disruption and uncertainty can still impact operations.

At IT ServiSource, we help businesses reduce risk through proactive monitoring, vulnerability management, and incident response planning. Having visibility into your environment makes it easier to validate threats quickly and respond calmly instead of reacting under pressure.

Extortion tactics rely on urgency — preparation helps remove that advantage.



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Experts warn of a ‘loud and aggressive’ extortion wave following Trivy hack Attackers compromised the open-source security tool and published malicious versions of the software. Mandiant warns the fallout could impact up to 10,000 downstream victims.

IT ServiSource | Cybersecurity Insight

This past week in cybersecurity is a reminder of just how active the threat landscape really is. From new vulnerabilities to ongoing phishing campaigns and emerging attack techniques — it never slows down.

What’s important isn’t just the individual incidents, but the pattern behind them.

Most attacks are still getting in through familiar gaps:
• Delayed patching
• Phishing and social engineering
• Weak or reused credentials
• Misconfigured systems
• Lack of visibility across environments

It’s rarely one big failure — it’s usually a combination of small weaknesses that attackers take advantage of.

For businesses, this highlights the need for consistency. Security isn’t a once-off fix — it’s an ongoing process of monitoring, updating, and improving.

At IT ServiSource, we focus on keeping that process running continuously. From patch management to real-time monitoring and layered protection, the goal is to reduce risk every day — not just after something goes wrong.

Because in cybersecurity, what happens in a single week can have long-term impact.



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A week in security (March 16 - March 22) A list of topics we covered in the week of March 16 to March 22 of 2026