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Email security - strengthening defences
Sound Networks protect your inbox with advanced configurable email filtering
Email is the front door to your organisation, and it's the door attackers most often try first. An estimated 91% of all cyberattacks begin with an email, and phishing alone is now involved in over a third of confirmed data breaches. No firewall, antivirus, or endpoint tool sits in front of that risk the way email security does, because email is the one channel every employee, in every department, uses every single day.
Effective email security isn't a single product, it's a combination of automated technology that stops the majority of malicious messages before they arrive, and trained people who can recognise and report the ones that get through. Neither approach is sufficient alone, email security is made up of layers of defences.
Native filtering built into platforms like Microsoft 365 catches the vast majority of phishing attempts, but even a small percentage gap represents millions of malicious messages reaching real inboxes. That's the gap human awareness has to close, all too often the human factor is the weakest layer of defence.
Why email security matters
Some numbers to make their own cases:
- Volume: an estimated 3.4 billion phishing emails are sent every single day, worldwide.
- Prevalence: roughly 84% of organisations experienced at least one successful phishing attack in the past year.
- Cost: business email compromise (BEC) alone accounted for over £2.07 billion in reported losses in a single year, /li>
- Root cause: the human element is a factor in more than 60% of confirmed breaches, this means that technology alone, no matter how good, cannot close the gap by itself.
- Sophistication: AI-generated phishing content is now harder to distinguish from legitimate email, with some studies showing AI-crafted lures achieving significantly higher click-through rates than traditional phishing attempts.
These aren't abstract risks. A single successful phishing email can lead to stolen credentials, fraudulent bank transfers, ransomware deployment, or a full network compromise, often within minutes of a single employee clicking a link.
The two pillars of email security
Email Filtering
Filtering reduces the sheer volume of malicious email your organisation is exposed to and this matters because the fewer malicious messages that land in an inbox, the fewer chances an employee has to make a costly mistake.
Phishing Awareness Training
Phishing awareness training and simulated phishing campaigns teach staff to recognise red flags (urgency, spoofed domains, unusual requests, mismatched sender details) and, critically, to report suspicious emails rather than ignore or act on them. Organisations that run regular simulated phishing exercises see measurably lower click-through rates over time, turning what would otherwise be your weakest link into an active layer of defence.
Why you need both
Relying on only one leaves an obvious gap. Filtering without training leaves your organization exposed the moment something slips through — and with 3.4 billion phishing emails sent daily, something eventually will. Training without filtering means employees must constantly fend off a flood of threats, leading to decision fatigue and bad decisions that better technology should have stopped before it ever reached them.
Building a layered email security strategy
A mature approach to email security typically includes:
- Automated filtering at the gateway or mailbox level to block the bulk of spam, malware, and known phishing patterns.
- Authentication protocols (SPF, DKIM, and DMARC) to prevent attackers from spoofing your own domain in phishing campaigns.
- Ongoing awareness training, including regular simulated phishing tests, rather than a one-time onboarding session.
- Clear reporting channels, so employees who spot something suspicious know exactly how to flag it and are encouraged to do so without fear of blame.
- Incident response procedures for when a phishing attempt does succeed, so damage can be contained quickly.
Cyber security solutions in Wiltshire
Working as your outsourced cyber security partner, we are here to keep your data safe and your business operating efficiently. At Sound Networks, it’s not just about installing plain old Antivirus software in a fire and forget fashion. We offer a complete range of cyber security solutions aligned to your own requirements, whether you're looking for:
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