Ban muon bao ve nhung file Word hoac Excel co chua thong tin nhay cam (bang luong, hop dong, du an cong ty)? Phuong phap ay la dat mat khau file Word va Excel. May man la tuu trong Microsoft Office, co tuy chon dat mat khau mien phi va don gian.
Tai sao nen dat mat khau file Word va Excel?
Dat mat khau file cung cap mot tang bao ve them:
- Kich hoat ma hoa: File duoc ma hoa bang AES-256 (tieu chuan bao mat cao), khong the mo ma khong co mat khau
- Bao ve khong bi truy cap tray y: Neu may tinh cua ban bi tay ca hoac trom, nguoi do khong the mo file ma khong biet mat khau
- Bao ve trai ban sao: Can hien xe them chi tra, khong ai co the sao va phat tan file khong bi phat hien
- Duc bao hiem va quy dinh: Nhieu cong ty yeu cau dat mat khau tren file co du lieu ca nhan
Cach dat mat khau file Excel
Phuong phap nay hoat dong tren ca Excel desktop va Excel online.
Tren Excel Desktop (Windows hoac Mac)
- Mo file Excel can bao ve
- Click File o thanh menu
- Chon Info (hoac Properties tren Mac)
- Tim nut Protect Workbook hoac Protect Sheet
- Chon Encrypt with Password
- Nhap mat khau manh vao hop thoai, sau do click OK
- Nhap lai mat khau de xac nhan
- Click OK, sau do Save file (Ctrl+S hoac Cmd+S)
Xong! File Excel bay gio duoc ma hoa. Lan sau ai mo file se phai nhap mat khau.
Luu y: Excel co 2 loai bao ve: "Protect Workbook" (bao ve toan bo file) va "Protect Sheet" (chi bao ve mot sheet). De bao ve du lieu, hay dung "Encrypt with Password" o phan Info.
Cach dat mat khau file Word
Tren Word Desktop (Windows hoac Mac)
- Mo van ban Word can bao ve
- Click File o thanh menu
- Chon Info
- Click Protect Document
- Chon Encrypt with Password
- Nhap mat khau manh, click OK
- Nhap lai mat khau de xac nhan
- Click OK, sau do Save file
Lan sau, ai muon mo file se phai nhap mat khau.
Cac kieu bao ve Word co the
Word co 2 loai bao ve chu yao:
- Encrypt with Password (ma hoa): Toan bo file duoc ma hoa. Ai mo file deu phai nhap mat khau.
- Restrict Editing: Cho phep ai cung mo file, nhung chi the sua neu co mat khau. Dieu nay huu ich neu ban muon chia se file nhung khong muon thay doi ho.
Tao mat khau manh
De bao mat hop ly, mat khau nen:
- Co it 12 ky tu (nhieu hon tot hon)
- Tron hop chu hoa, chu thuong, so va ky tu dac biet (!@#$%)
- Khong la tu trong tu dien hoac thong tin ca nhan dung co (ten, nam sinh, dien thoai)
- Khac nhau cho tung file (khong lap lai mat khau)
Vi du mat khau manh: Xe4@mKhoa2024#Bao!
Cach bao ve khi gui file co mat khau
Canh bao quan trong: KHONG gui mat khau trong email cung voi file ma hoa. Dieu nay se bi phat hien neu email bi can bang hoac tray ca. Thay vao do, hay goi dien hoac tin nhan (SMS) cho nhan vien de co mat khau rieng.
Cach ay dep nhat:
- Gui file co ma hoa bang email
- Goi dien hoac gui tin SMS cho nguoi nhan voi mat khau
- Neu co the, sat dung mat khau sau 24 gio (ung dung cua Microsoft khong ho tro, nhung co the tao file moi)
Quen mat khau - Lam sao?
Co tin xau: Microsoft KHONG the lay lai mat khau file da ma hoa. Neu quen mat khau, file la mat di (tai khong co cach nao khac de mo ma khong co mat khau).
De tranh tinh trang nay:
- Ghi mat khau vao tay (giay an toan hoac ky thuat)
- Luu mat khau trong password manager (1Password, Bitwarden, LastPass)
- Tao file ban sao truoc khi dat mat khau
- Luu mat khau trong thu muc rieng va bao ve thu muc do
Co the bo mat khau duoc khong?
Co, tuy nhien ban phai biet mat khau ban dau:
- Mo file (phai nhap mat khau cu)
- Vao File > Info > Protect Document (Word) hoac File > Info > Protect Workbook (Excel)
- Chon Encrypt with Password
- De hop thoai mat khau trong - chi click OK, khong nhap gi
- Luu file
File bay gio khong con co mat khau.
| Tinh nang | Word | Excel | WPS Office | OnlyOffice |
|---|---|---|---|---|
| Encrypt with Password | ✓ Co | ✓ Co | ✓ Co | ✓ Co |
| Restrict Editing | ✓ Co | ✓ Co | ✓ Co | ✓ Co |
| Do phuc tap | Don gian | Don gian | Don gian | Trung binh |
| Ma hoa AES-256 | ✓ Co | ✓ Co | ✓ Co | ✓ Co |
Dat mat khau tren cac phan mem khac
WPS Office
- Mo file trong WPS Office
- Click Tools > Protect Document
- Chon Encrypt
- Nhap mat khau va xac nhan
- Save file
OnlyOffice
- Mo file trong OnlyOffice
- Click File > Properties
- Chon tab Security
- Khoanh tron "Protect with password to open"
- Nhap mat khau va xac nhan
- Click OK va Save
Can Microsoft Office ban quyen?
TND la nha cung cap phan mem ban quyen chinh hang tai Viet Nam, xuat hoa don VAT day du, tu van chon dung license.
Xem Office ban quyenCau hoi thuong gap
Dat mat khau file co mat thoi gian khong?
Khong, mat khau se con co hieu luc cho den khi ban bo no. Nhung ban co the dat mat khau moi bat cu luc nao (Protect Document/Workbook > Encrypt, va ghi mat khau moi).
Co the dat mat khau cho it chi the su dung duoc khong?
Co, chon Restrict Editing thay vi Encrypt with Password. Nguoi nhan co the mo file, nhung khong the sua chi tru khi biet mat khau.
Mat khau file Excel hay Word co an toan khong?
Co, Excel va Word dung AES-256 encryption (tieu chuan an toan cua chinh phu). Dieu nay an toan nhat ban co the lam ma khong tram chi phi.
Gui file co mat khau bang email co an toan khong?
Co, neu ban KHONG gui mat khau trong email cung voi file. Gui file co ma hoa bang email la an toan (mien ki nay chi la bin du lieu), sau do goi dien hoac tin SMS voi mat khau.
