Report by KnowBe4

Phishing Threat Trend Report

24 FINDINGSPublished Mar 20, 2025
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Key Findings

Between September 15, 2024 and February 14, 2025, there was a 49.9% increase in phishing emails sent from compromised accounts.

Phishing

3,829 days - average domain age for phishing attacks getting through.

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20% of phishing emails between September 15, 2024 and February 14, 2025 relied solely on social engineering.

PhishingSocial engineering

Most polymorphic phishing emails are sent from compromised accounts (52%), followed by phishing domains (25%), and webmail (20%).

PhishingPolymorphic

There was a 17.3% increase in phishing emails between September 15, 2024 and February 14, 2025 compared to the previous six months.

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81.9% of phishing victims had their emails leaked in previous breaches.

PhishingData breachData leak

The phishing hyperlink, malware, and social engineering payloads getting through traditional detection have surged, with phishing hyperlinks increasing by 36.8%, malware by 20%, and social engineering tactics by 14.2% compared to the previous six months.

Phishing

The most common third-party platforms used for phishing were: • sendgrid.com • salesforce.com • amazonaws.com • sendlayer.com • mailgun.com • marketo.com.

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Of 512 job application-related phishing emails, attackers targeted engineering (64%) roles, followed by finance (12%), HR (10%), IT (10%), product (2%), and others (2%).

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25.9% of phishing emails between September 15, 2024 and February 14, 2025 contained attachments.

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82.6% of all phishing emails analysed exhibited some use of AI.

PhishingAI

In 2024, there was a 47% increase in phishing emails evading detection by Microsoft’s native security and secure email gateways.

PhishingEvasionMicrosoft

There was a 22.6% increase in ransomware payloads.

Ransomware

New starters typically received a phishing email after 3 weeks.

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On average, phishing emails contained 1058 characters (~188 words)

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76.4% of all phishing campaigns now use polymorphic phishing tactics.

PhishingPolymorphic

Ransomware payloads in phishing attacks have risen by 22.6% over six months, with a sharp 57.5% increase in just three months.

RansomwarePhishing

The top three words used in phishing emails: Urgent, Review, Sign.

Phishing

There has been a 57.9% increase in phishing attacks being sent from compromised accounts getting through traditional detection.

PhishingEvasion

The top cryptocurrencies demanded during extortion are: Bitcoin, Monero, XRP.

ExtortionCryptocurrencies

Job application-related phishing attacks are not only sent to individual accounts (24%) but also shared mailboxes (52%) and individual inboxes with activated delegate functions (21%) (e.g. a personal assistant has access to an executive’s inbox).

Phishing

Between September 15, 2024 and February 14, 2025, there was a 11.1% incease in phishing emails sent from compromised email addresses within the supply chain.

PhishingSupply chain

Between September 15, 2024 and February 14, 2025, there was a 67.4% incease in the use of third-party platforms for phishing emails.

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64% of phishing attacks are focused on engineering roles.

Phishing