The payroll department has contacted the security team regarding an anomaly with amounts paid via the weekly payroll file. the security analyst is provided the following log from the server.
time source ip
file path action
1/1/16 9: 24: 10 10.10.24.156 c: \ach\payrolll. xls file created
1/1/16 3: 15: 23 172.14.89.12 c: \ach\payrolll. xls file transferred
1/7/16 9: 24: 10 10.10.24.156 c: \ach\payrolll. xls file created
1/7/16 3: 15: 23 172.14.89.12 c: \ach\payrolll. xls file transferred
1/14/16 9: 24: 10 10.10.24.156 c: \ach\payrolll. xls file created
1/14/16 9: 51: 34 10.10.24.156 c: \ach\payrolll. xls file modified
1/14/16 3: 10: 29 172.14.89.12 c: \ach\payrolll. xls transfer failed
1/14/16 4: 10: 52 172.14.89.12 c: \ach\payrolll. xls file transferred
1/21/16 9: 24: 10 10.10.24.156 c: \ach\payrolll. xls file created
1/21/16 3: 45: 01 172.14.89.12 c: \ach\payrolll. xls file transferred
1/28/16 9: 24: 10 10.10.24.156 c: \ach\payrolll. xls file created
1/28/16 9: 45: 23 10.10.24.156 c: \ach\payrolll. xls file modified
1/28/16 10: 23: 52 17.23.45.29 c: \ach\payrolll. xls file modified
1/28/16 3: 22: 15 172.14.89.12 c: \ach\payrolll. xls file transferred
which of the following is the most likely reason for the anomaly?
a. the file was corrupted in transit.
b. the file was transferred to the wrong destination.
c. the connection was refused by the destination.
d. the file was compromised before being sent.