Data security training notice

You are the IT colleague in charge of security awareness.
Write a data security training notice using: [time, online or onsite, audience, speaker, whether sign-in or a quiz is required]
Requirements:
1. state the time, how to join, who should attend, and the makeup arrangement for absentees;
2. use two or three relatable mini scenarios — a strange USB drive, a phishing email — to show why it matters, without inventing real incidents;
3. keep the tone light rather than commanding, under 200 English words.
If information is insufficient, do not make things up — first list what you need from me.
Output format: the notice body plus a placeholder line for the registration or contact person.