lNotify US-CERT (within one hour) https://forms.us-cert.gov/report/
If your mobile computing device containing PII is lost, you must inform the following agencies within the specified time period except:
The US CERT within 12 hours
The US CERT within 1 hour.b.The US CERT within 12 hours.c.The Component Privacy Office within 24 hours.d.The DoD Privacy Office within 48 hours
Mainframes
all of the above,department of labor and workers, agriculture and farmers, commerce and business
The answer depends upon what nation you reside within; each country has differing laws concerning the disposition and handling of PII (personally identifiable information.) In the US private citizens are NOT required to notify authorities but it is always a good idea to contact financial institutions. In the US you can also contact the FBI if you are concerned about Identity Theft.
If your mobile computing device containing PII is lost and the device is owned by your employer or contains business information belonging to your employer you must notify the person or group designated by your employer for information security functions. If the device belongs to you and the PII is information of friends, family, or other non-work associates, your should notify them. If the PII is only about you or your family, you have notified the correct person when you notice the loss and tell your family.
all the above
MAAs are a written agreement between agencies, or jurisdiction to assist one another on request by furnishing personnel, equipment or expertise in a specified manner.
The first website that I came across was Salesforce.com. They offer great reviews and advice on cloud computing. Sales force seems to be the top website for cloud computing.
part of the public sector
The manufacture of the device, or if it is a laptop some have comutrace built into the bios and you can contact computrace for that