001-01-0001, for Grace D. Owen of Concord, N.H., 3 letters
078-05-1120, on a Woolworth's sample wallet insert: Abbr., 3 letters
123-45-6789, e.g.: Abbr., 3 letters
123-45-6789, for one: Abbr., 3 letters
123-45-6789, say: abbr., 3 letters
1996 Tom Clancy thriller, 3 letters
457-55-5462, for LifeLock CEO Todd Davis, 3 letters
American taxpayer's ID, 3 letters
Application datum (abbr.), 3 letters
Application info: Abbr., 3 letters
Application request: Abbr., 3 letters
Apt. application datum, 3 letters
Blank on a job app., 3 letters
Box d on IRS Form W-2, 3 letters
Box d on the IRS W-2, 3 letters
Checking acct. datum, 3 letters
Common form datum: Abbr., 3 letters
Credit application info, 3 letters
Credit application number (abbr.), 3 letters
Datum on an IRS form, 3 letters
Datum sought by ID thieves, 3 letters
Datum sought by identity thieves: Abbr., 3 letters
Digits issued by the govt., 3 letters
Digits on a credit appl., 3 letters
Digits used for ident., 3 letters
Digits used when the IRS gets its hand in your pocket, 3 letters
Elvis Presley's ended in 2002: Abbr., 3 letters
Employee file datum: Abbr., 3 letters
Employee ID, at times, 3 letters
Entry on an IRS form, 3 letters
Every U.S. citizen has one: Abbr., 3 letters
Fig. in an identity theft case, 3 letters
Fig. in identity theft, 3 letters
Fig. issued at birth, 3 letters
Fig. sought by an identity thief, 3 letters
Fig. that never ends with four zeros, 3 letters
Fig. that never starts with an 8 or a 9, 3 letters
Fig. with two dashes, 3 letters
Form 1040 info: abbr., 3 letters
Form W-9 datum: Abbr., 3 letters
Form W-9 info: Abbr., 3 letters
Government-issued ID, 3 letters
Hirer's request: Abbr., 3 letters
ID assigned to over 453 million people so far, 3 letters
ID entered on every I.R.S. form, 3 letters
ID first issued in 1936, 3 letters
ID in the form xxx-xx-xxxx, 3 letters
ID info., in the U.S., 3 letters
ID needed for a loan, 3 letters
ID on an I.R.S. form, 3 letters
ID requested by the IRS, 3 letters
ID sought by phishers, 3 letters
ID theft data, perhaps, 3 letters
ID to guard from identity theft, 3 letters
ID with nine digits and two hyphens, 3 letters
ID with two hyphens, 3 letters
Identification that John David Sweeney, Jr. was the first to receive: Abbr., 3 letters
Identifier first issued in 1936: Abbr., 3 letters
Identity theft target: Abbr., 3 letters
Identity thief's need, for short, 3 letters
Identity thief's pay dirt, briefly, 3 letters
Identity thief's target: Abbr., 3 letters
Important digits on an I.R.S. form, 3 letters
Important ID information, 3 letters
Info entered on an I.R.S. form, 3 letters
Info on a W-2 form: Abbr., 3 letters
Insurance form info: Abbr., 3 letters
IRS form 1040 datum, 3 letters
It has nine digits and two hyphens (abbr.), 3 letters
It has nine figures: Abbr., 3 letters
It has two dashes: Abbr., 3 letters
It never starts with an 8 or a 9: Abbr., 3 letters
It's used for ID in the U.S., 3 letters
Item on an IRS form, 3 letters
Job application datum, 3 letters
Job application datum (Abbr.), 3 letters
Job application fig., 3 letters
Job application info: Abbr., 3 letters
John David Sweeney, Jr. was issued the first one (FWIW it was 055-09-0001), 3 letters
Lifelong assignment, briefly?, 3 letters
Line on an appl. form, 3 letters
Line on an IRS form, 3 letters
Loan application fig., 3 letters
Mtge. application datum, 3 letters
Nine-digit I.R.S. ID, 3 letters
Nine-digit ID (Abbr.), 3 letters
Nine-digit identification: Abbr., 3 letters
Nine-digit identifier: abbr., 3 letters
No. under the year on many tax forms, 3 letters
Passport application datum: Abbr., 3 letters
Paycheck ID, perhaps, 3 letters
Payroll ID, at times, 3 letters
Personal ID since 1936, 3 letters
Personnel datum: Abbr., 3 letters
Phishing lure; Abbr., 3 letters
Phishing string: Abbr., 3 letters
Phishing target (abbr.), 3 letters
Prize for a phisher: Abbr., 3 letters
Sequence with two hyphens: Abbr., 3 letters
Subj. of the Privacy Act of 1974, 3 letters
Tax form datum (abbr.), 3 letters
Taxpayer's ID: Abbr., 3 letters
Taxpayer's nine-digit ID, 3 letters
Taxpayer's nine-digit ID: Abbr., 3 letters
U.S. citizen's nine digits, 3 letters
U.S. job application datum, 3 letters
Until June 25, 2011, its first three digits had geographical significance: Abbr., 3 letters
A couple might put a couple on their 1040s, 4 letters
Credit application figs., 4 letters
Credit-application data: Abbr., 4 letters
Data for HR managers, 4 letters
Data in some schedules: Abbr., 4 letters
Data thief's prizes: Abbr., 4 letters
Employee data: Abbr., 4 letters
Employee IDs, at times, 4 letters
Employee IDs, maybe, 4 letters
Employee IDs, often, 4 letters
Employees' ID's: Abbr., 4 letters
Employment app. data, 4 letters
Fed. retirement IDs, 4 letters
Figs. in a 3-2-4 format, 4 letters
Figs. in bank records, 4 letters
Figs. in identity theft, 4 letters
Figs. on blue cards, 4 letters
Figs. on tamper-proof cards since 1983, 4 letters
Figs. with two hyphens, 4 letters
Govt. database entries, 4 letters
I.R.S. figures: Abbr., 4 letters
ID thieves' targets, 4 letters
ID's for the I.R.S., 4 letters
ID's on applications, 4 letters
ID's sought in phishing, 4 letters
ID's with two hyphens, 4 letters
Identity theft figs., 4 letters
Identity theft targets: Abbr., 4 letters
Identity thief's acquisitions, for short, 4 letters
Identity thief's figs., 4 letters
IDs first issued in 1936, 4 letters
IDs often used in identity theft, 4 letters
IDs often verified by the last 4 digits, 4 letters
IDs sought by phishers, 4 letters
IDs that go on Form 1040, 4 letters
IDs used in identity theft, 4 letters
Info put on some schedules: Abbr., 4 letters
Info that may be phished: Abbr., 4 letters
Job application data, 4 letters
Job application nos., 4 letters
Nine-digit govt. IDs, 4 letters
Nine-digit identifiers: abbr., 4 letters
Nos. divided by dashes, 4 letters
Payroll dept. figs., 4 letters
Personnel data, briefly, 4 letters
Personnel data: Abbr., 4 letters
Personnel dept. data, 4 letters
Personnel dept. IDs, 4 letters
Phishers' prey; Abbr., 4 letters
Phishing targets (abbr.), 4 letters
Returns data: Abbr., 4 letters
Sequences with two dashes: Abbr., 4 letters
Some employment records: Abbr., 4 letters
Some hyphenated figs., 4 letters
Some hyphenated IDs, 4 letters
Some personal data: Abbr., 4 letters
Strings used in payroll depts., 4 letters
Targets of phishing (abbr.), 4 letters
Tax form data: Abbr., 4 letters
Tax return data: Abbr., 4 letters
The IRS requires them, 4 letters
They have nine digits and two hyphens (abbr.), 4 letters
They have nine digits and two hyphens, briefly, 4 letters
They have only nine digits (Abbr.), 4 letters
They have two dashes: Abbr., 4 letters
They never begin with 666: Abbr., 4 letters
They were first issued in Nov. 1936, 4 letters