用VBA巨集程式碼破解Excel密碼保護
第一步：開啟該檔案，先解除預設的“巨集禁用”狀態。
方法是：把工具欄下的【巨集】→【安全性】中的【安全級】設定為中或者為低即可。
再切換到工具欄下的【巨集】→【錄製新巨集】，出現“錄製新巨集”視窗，在“巨集名”定義一個名稱為：PassWordBreaker，點選“確定”退出；
第二步：再點選工具欄下的【巨集】→【安全性】，選擇“巨集名”下的“PasswordBreaker”並點選“編輯”，開啟“Microsoft Visual Basic”編輯器，用如下內容替換右側視窗中的所有程式碼：
Sub PasswordBreaker()
Dim i As Integer, j As Integer, k As Integer
Dim i1 As Integer, i2 As Integer, i3 As Integer
Dim i4 As Integer, i5 As Integer, i6 As Integer
On Error Resume Next
For i = 65 To 66: For j = 65 To 66: For k = 65 To 66
For l = 65 To 66: For m = 65 To 66: For i1 = 65 To 66
For i2 = 65 To 66: For i3 = 65 To 66: For i4 = 65 To 66
ActiveSheet.Unprotect Chr(i) & Chr(j) & Chr(k) & _
Chr(l) & Chr(m) & Chr(i1) & Chr(i2) & Chr(i3) & _
Chr(i4) & Chr(i5) & Chr(i6) & Chr(n)
If ActiveSheet.ProtectContents = False Then
MsgBox "One usable password is " & Chr(i) & Chr(j) & _
Chr(i3) & Chr(i4) & Chr(i5) & Chr(i6) & Chr(n)
ActiveWorkbook.Sheets(1).Select
Range("a1").FormulaR1C1 = Chr(i) & Chr(j) & _
Chr(k) & Chr(l) & Chr(m) & Chr(i1) & Chr(i2) & _
Chr(i3) & Chr(i4) & Chr(i5) & Chr(i6) & Chr(n)
Exit Sub
End If
Next: Next: Next: Next: Next: Next
Next: Next: Next: Next: Next: Next
End Sub