Spam mail from own mailserver, but there is no outgoing mail in postfix log? [duplicate]

Today I received a phishing mail from my own (valid) sender address (info@example.com).
I checked the e-mail header and see the mail was received by my valid mailserver.
Received: from mail.example.com ([::1]:36128) by domain.1blu.de (kopa… Continue reading Spam mail from own mailserver, but there is no outgoing mail in postfix log? [duplicate]

‘Fines alone aren’t enough:’ FCC threatens to blacklist voice providers for flouting robocall rules

The FCC move to prevent American from receiving robocalls could boot as many as seven VoIP providers from U.S. telecom networks.

The post ‘Fines alone aren’t enough:’ FCC threatens to blacklist voice providers for flouting robocall rules appeared first on CyberScoop.

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Malicious Oauth app enables attackers to send spam through corporate cloud tenants

Microsoft investigated a new kind of attack where malicious OAuth applications were deployed on compromised cloud tenants before being used for mass spamming.
The post Malicious Oauth app enables attackers to send spam through corporate cloud tenants … Continue reading Malicious Oauth app enables attackers to send spam through corporate cloud tenants

New Spam Attack Abusing OAuth Apps to Target Microsoft Exchange Servers

By Deeba Ahmed
According to Microsoft 365 Defender Research Team, in an incident they analyzed, malicious OAuth applications were deployed on compromised cloud tenants, and eventually, attackers took over Exchange servers to carry out spam campaigns.
Continue reading New Spam Attack Abusing OAuth Apps to Target Microsoft Exchange Servers