Microsoft blocked 1,000 malicious emails every second in 2021

Close up of a person touching an email icon.
(Image credit: Geralt / Pixabay)

Microsoft’s cybersecurity solutions blocked 1,000 malicious emails for every second of 2021 - approximately 31.5 million seconds, the company has revealed.

In its inaugural Cyber Signals quarterly cybersecurity report, the company used data from its Microsoft Defender antivirus as well as Azure Active Directory to understand today’s threat landscape, and where brute force, phishing, as well as other malicious e-mail activities, such as malware distribution, stand. 

These two sources aside, Microsoft also said it pulled in data from the 24 trillion daily security signals it gets across the cloud, endpoints, and intelligent edge. As it turns out, Microsoft Defender for Office 365 blocked more than 35.7 billion phishing and other malicious emails that targeted both enterprises and consumers, during 2021. 

Blocking nation-state attacks 

What’s more, Defender for Endpoint blocked more than 9.6 billion malware attacks against enterprise and consumer endpoints, while Azure Active Directory managed to detect, and block, more than 25.6 billion attempts at hijacking enterprise customer accounts via brute force. 

Many of these attacks, the report suggests, come from nation-state attackers. The attacks coming from these groups are on the rise, it claims, saying that they usually deploy simple but effective tactics, such as spear-phishing, social engineering attacks, and large-scale password spray.

As long as corporations, but consumers as well, continue managing their credentials poorly, and continue leaving their digital identities without crucial safeguards such as multi-factor authentication (MFA), nation-states won’t need to change their tactics. 

The need for MFA, the report concludes, “cannot be overstated”. The simplicity and low cost of identity-focused attacks make them convenient and effective for threat actors. However, MFA is not the only identity and access management tool organizations should use, Microsoft continues, hinting at antivirus solutions, zero-trust network access, and firewalls. 

Still, it considers MFA “a powerful deterrent to attacks.”

TOPICS

Sead is a seasoned freelance journalist based in Sarajevo, Bosnia and Herzegovina. He writes about IT (cloud, IoT, 5G, VPN) and cybersecurity (ransomware, data breaches, laws and regulations). In his career, spanning more than a decade, he’s written for numerous media outlets, including Al Jazeera Balkans. He’s also held several modules on content writing for Represent Communications.

Read more
Best email services: image of email with one unread message alert
Over 400 million unwanted and malicious emails were received by businesses in 2024
Computer Hacked, System Error, Virus, Cyber attack, Malware Concept. Danger Symbol
Help! We're drowning in email spam, it's about to get worse and there's nothing we can do to stop it
Android phone malware
Over 25 new malware variants created every single hour as smart device cyberattacks more than double in 2024
NordVPN
US hit with over 1.9 billion malware threats last year - here's how to stay safe
Fraude en ligne phishing
Phishing clicks nearly tripled in 2024 as criminals aim for smarter attacks
Fraud
Hackers are tricking victims into scam-yourself attacks with fake tutorials, CAPTCHAs, and updates
Latest in Security
Microsoft
"Another pair of eyes" - Microsoft launches all-new Security Copilot Agents to give security teams the upper hand
Lock on Laptop Screen
Medusa ransomware is able to disable anti-malware tools, so be on your guard
An abstract image of digital security.
Fake file converters are stealing info, pushing ransomware, FBI warns
Insecure network with several red platforms connected through glowing data lines and a black hat hacker symbol
Coinbase targeted after recent Github attacks
hacker.jpeg
Key trusted Microsoft platform exploited to enable malware, experts warn
IBM office logo
IBM to provide platform for flagship cyber skills programme for girls
Latest in News
Microsoft
"Another pair of eyes" - Microsoft launches all-new Security Copilot Agents to give security teams the upper hand
Cassian Andor looking nervously over his shoulder in Andor season 2
New Andor season 2 trailer has got Star Wars fans asking the same question – and it includes an ominous call back to Rogue One's official teaser
Ncuti Gatwa as The Fifteenth Doctor in Doctor Who
Disney+ drops new trailer for Doctor Who season 2 that promises an epic adventure across time and space
23andMe
23andMe is bankrupt and about to sell your DNA, here's how to stop that from happening
A phone showing a ChatGPT app error message
ChatGPT was down for many – here's what happened
AirPods Max with USB-C in every color
Apple's AirPods Max with USB-C will get lossless audio in April, but you'll need to go wired