A yellow banner is introduced in e-mails to remind you of the risk of phishing.
This is due to the current security situation and to further increase vigilance against attempts at phishing / viruses / malware.
The banner, which will be added to the top of each email that has an external sender, will have the text:
CAUTION: This email originated from outside of the organization. Do not click links or open attachments unless you recognize the sender and know the content is safe.