• Re: Dubious/forged e idence

    From The Todal@21:1/5 to Dave on Mon Apr 28 09:23:56 2025
    On 28/04/2025 09:02, Dave wrote:
    Dear all,

    Some of you have followed and been very helpful with a claim I am bringing (small claims track for not fulfilling an agreement to pay for work for
    those of you that haven’t).

    We have now submitted our evidence packs. The Defendant’s pack contains an element purporting to be an email chain between her and the Police in which it is asserted that they are looking for me and ‘have enough to bring me in for an informal interview’ and that I am not living at my given address.

    I think the Defendant has either forged it or got a Police employee (but
    not a Constable) friend to collude in the dialogue.

    The email seems to come from a genuine Police domain but she has scribbled out the sender’s name in the email addresses.

    What is your advice on how to proceed? Are you aware of any forensic
    services that could recover the address (it is scribbled out rather photocopied).

    The claims in the email can’t be true as I haven’t been contacted by the Police even once, I am almost always at home, I have done nothing to
    warrant interview.

    Many thanks.


    Could you perhaps contact the police yourself, tell them that this
    appears to be forged correspondence purporting to be from the police, justifying the arrest of the perpetrators?

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Alan J. Wylie@21:1/5 to Dave on Mon Apr 28 16:41:47 2025
    Dave <david.christopher.astles@gmail.com> writes:

    We have now submitted our evidence packs. The Defendant’s pack contains an element purporting to be an email chain between her and the Police in which it is asserted that they are looking for me and ‘have enough to bring me in for an informal interview’ and that I am not living at my given address.

    I think the Defendant has either forged it or got a Police employee (but
    not a Constable) friend to collude in the dialogue.

    The email seems to come from a genuine Police domain but she has scribbled out the sender’s name in the email addresses.

    What is your advice on how to proceed? Are you aware of any forensic
    services that could recover the address (it is scribbled out rather photocopied).

    Can I assume that an "evidence pack" is sheets of printed paper?

    It is trivially easy to forge a printout that looks to be an email.

    Any reputable email these days will have headers that include a DKIM
    signature.

    This is a cryptographic signature that validates the body and many
    of the headers, including Subject: and Date: and requires a private
    key associated with the sender's domain to generate.

    See https://en.wikipedia.org/wiki/DomainKeys_Identified_Mail

    I'd ask the court / police to request from the Defendant a full digital copy, including headers of the email. Forward as attachment should work.

    Here's an example:

    DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=lancashire.police.uk;
    h=from:subject:mime-version:to:content-type:content-transfer-encoding;
    s=NPS; bh=bnWlE0//ldSilhn79DXWNc/tpRPASllivLYu/LPzuRU=;
    b=MxSoq+xsdTsmLJMt+oGO6c2J6+8LGXYoA4HvBl22law3jOMIG14iFpqHOFCbFkE+9gNe
    gTturwRlhXYlmQgJmVQ7SO+Y+DkLe3YQublr+bASbcJXgqTu6daE/R7u7/k+e2la+oY7ip
    vcLIAMiVfb464HHdqAEDvLm0l0Q9C5CGGuZOQmPHfWDXWhKzUzJIYZHITYhayLJY6m9DqH
    wX5Knzuc7oJFhNPLUdGuaDsPfdbJS0EeWg4LJC7qkFmv3c6zBq0GNy32b7ORTxouMXsIt2
    FDMsD6c2akcsowFts0D4oDXqT+CZQyjOdAQm+uQU4yKwiZnBHft9iG+Pn+j+ndRQ==

    Unfortunately, it seems that since 2021, when I received that email,
    Lancashire Police have rotated their key and the selector (s=NPS no
    longer works).

    Here's a recent example from my domain:

    DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=wylie.me.uk;
    s=mydkim006; t=1745782975;
    bh=RXuw3XQI3TtCJBY8KZlv+nf3A2TpjJw+9J1OXlPu5N4=;
    h=Date:From:To:Cc:Subject:In-Reply-To:References;
    b=hoc/oLKbqk2TmpmxDwUJOXWC0Qqh8gSNF4pbJx7cGLPNP22eoYZKgR3QIuhB3hsdX
    X/Dpi2voQCiTBKGQUVa6O6CnS00ePNaT+1Ybp0SfW1m5DqzyjW72ZXHPc+tdXZZ4Oz
    0Bt3KTTAj7/dkTec+xaukIw4cCY4TwKv8n2g/kIj3GqqMl4rTyxGlwfrmcxQ1lrpPi
    4I9dBUBbuZMFXNtUp291l1Zy7RLB0b9lfoki3b4cROCGkLnIgOKoL/FxWukMe+fg2y
    xbC/N/XrfHYB+1pu9yKlxaTv6noP/mUPN9YlW6rEJJY/7LXQAsSMPKv30wFKBM632r
    39aWoPPwRVtUg==

    and the public key can then be looked up

    $ dig +short -t txt mydkim006._domainkey.wylie.me.uk
    "v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAu2Ut003KeaCrfWe5woqHoWuPYvV4AKeI8ytzn0ddam1BiRO1QUGpTzhdYiXASdhjxkFetoFF1BeRmE8kqbaDNK8ttPWa7fOvqtR+kluBs9rRvomWj8eFZcxsXABLYs6gQSNvuxDZipA2wL/FPaAOEw/pOCAQ70say4/ww8JZMqMde9pfKp0obNwOudzL" "
    jLgSXQaWAOXcNOMy+ai8WulUOdoAxbGhHdpFSLeOOZYQqzV/Tm6kDhOtGWBSzf+dR/hhelRd0A4VvA20laRMdVhMnLbiZycMTB7wWAojPHixQSHj3w0djiNzm41/J/j1ypQbEouBb2P+RE0El4CSvyVgcwIDAQAB"

    and the email can be verified as being signed by me.

    $ grep ^Date foo
    Date: Sun, 27 Apr 2025 21:35:48 +0100
    $ opendkim-testmsg < foo
    $ [no output means OK]

    [edit foo and change 1 bit in the Date header]

    $ grep ^Date foo
    Date: Sun, 27 Apr 2025 21:35:49 +0100
    $ opendkim-testmsg < foo
    opendkim-testmsg: dkim_eom(): Bad signature
    $


    --
    Alan J. Wylie https://www.wylie.me.uk/ mailto:<alan@wylie.me.uk>
    Dance like no-one's watching. / Encrypt like everyone is.
    Security is inversely proportional to convenience

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Roger Hayter@21:1/5 to Alan J. Wylie on Mon Apr 28 16:08:48 2025
    On 28 Apr 2025 at 16:41:47 BST, ""Alan J. Wylie"" <alan@wylie.me.uk> wrote:

    Dave <david.christopher.astles@gmail.com> writes:

    We have now submitted our evidence packs. The Defendant’s pack contains an >> element purporting to be an email chain between her and the Police in which >> it is asserted that they are looking for me and ‘have enough to bring me in
    for an informal interview’ and that I am not living at my given address. >>
    I think the Defendant has either forged it or got a Police employee (but
    not a Constable) friend to collude in the dialogue.

    The email seems to come from a genuine Police domain but she has scribbled >> out the sender’s name in the email addresses.

    What is your advice on how to proceed? Are you aware of any forensic
    services that could recover the address (it is scribbled out rather
    photocopied).

    Can I assume that an "evidence pack" is sheets of printed paper?

    It is trivially easy to forge a printout that looks to be an email.

    Any reputable email these days will have headers that include a DKIM signature.

    This is a cryptographic signature that validates the body and many
    of the headers, including Subject: and Date: and requires a private
    key associated with the sender's domain to generate.

    See https://en.wikipedia.org/wiki/DomainKeys_Identified_Mail

    I'd ask the court / police to request from the Defendant a full digital copy, including headers of the email. Forward as attachment should work.

    Here's an example:

    DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=lancashire.police.uk;
    h=from:subject:mime-version:to:content-type:content-transfer-encoding;
    s=NPS; bh=bnWlE0//ldSilhn79DXWNc/tpRPASllivLYu/LPzuRU=;
    b=MxSoq+xsdTsmLJMt+oGO6c2J6+8LGXYoA4HvBl22law3jOMIG14iFpqHOFCbFkE+9gNe
    gTturwRlhXYlmQgJmVQ7SO+Y+DkLe3YQublr+bASbcJXgqTu6daE/R7u7/k+e2la+oY7ip
    vcLIAMiVfb464HHdqAEDvLm0l0Q9C5CGGuZOQmPHfWDXWhKzUzJIYZHITYhayLJY6m9DqH
    wX5Knzuc7oJFhNPLUdGuaDsPfdbJS0EeWg4LJC7qkFmv3c6zBq0GNy32b7ORTxouMXsIt2
    FDMsD6c2akcsowFts0D4oDXqT+CZQyjOdAQm+uQU4yKwiZnBHft9iG+Pn+j+ndRQ==

    Unfortunately, it seems that since 2021, when I received that email, Lancashire Police have rotated their key and the selector (s=NPS no
    longer works).

    Here's a recent example from my domain:

    DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=wylie.me.uk;
    s=mydkim006; t=1745782975;
    bh=RXuw3XQI3TtCJBY8KZlv+nf3A2TpjJw+9J1OXlPu5N4=;
    h=Date:From:To:Cc:Subject:In-Reply-To:References;
    b=hoc/oLKbqk2TmpmxDwUJOXWC0Qqh8gSNF4pbJx7cGLPNP22eoYZKgR3QIuhB3hsdX
    X/Dpi2voQCiTBKGQUVa6O6CnS00ePNaT+1Ybp0SfW1m5DqzyjW72ZXHPc+tdXZZ4Oz
    0Bt3KTTAj7/dkTec+xaukIw4cCY4TwKv8n2g/kIj3GqqMl4rTyxGlwfrmcxQ1lrpPi
    4I9dBUBbuZMFXNtUp291l1Zy7RLB0b9lfoki3b4cROCGkLnIgOKoL/FxWukMe+fg2y
    xbC/N/XrfHYB+1pu9yKlxaTv6noP/mUPN9YlW6rEJJY/7LXQAsSMPKv30wFKBM632r
    39aWoPPwRVtUg==

    and the public key can then be looked up

    $ dig +short -t txt mydkim006._domainkey.wylie.me.uk
    "v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAu2Ut003KeaCrfWe5woqHoWuPYvV4AKe I8ytzn0ddam1BiRO1QUGpTzhdYiXASdhjxkFetoFF1BeRmE8kqbaDNK8ttPWa7fOvqtR+kluBs9rR vomWj8eFZcxsXABLYs6gQSNvuxDZipA2wL/FPaAOEw/pOCAQ70say4/ww8JZMqMde9pfKp0obNwOu dzL" "jLgSXQaWAOXcNOMy+ai8WulUOdoAxbGhHdpFSLeOOZYQqzV/Tm6kDhOtGWBSzf+dR/hhelRd0A4V vA20laRMdVhMnLbiZycMTB7wWAojPHixQSHj3w0djiNzm41/J/j1ypQbEouBb2P+RE0El4CSvyVgc wIDAQAB"

    and the email can be verified as being signed by me.

    $ grep ^Date foo
    Date: Sun, 27 Apr 2025 21:35:48 +0100
    $ opendkim-testmsg <foo> $ [no output means OK]

    [edit foo and change 1 bit in the Date header]

    $ grep ^Date foo
    Date: Sun, 27 Apr 2025 21:35:49 +0100
    $ opendkim-testmsg <foo> opendkim-testmsg: dkim_eom(): Bad signature
    $

    Even before we get to proving the existence and validity of the actual emails, the evidential value of email correspondence with one of the two participant's actual identity not shown must be rather low.

    --

    Roger Hayter

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Pamela@21:1/5 to Dave on Tue Apr 29 14:29:47 2025
    On 17:47 28 Apr 2025, Dave said:
    Roger Hayter <roger@hayter.org> wrote:
    On 28 Apr 2025 at 16:41 "Alan J. Wylie"" <alan@wylie.me.uk> wrote:
    Dave <david.christopher.astles@gmail.com> writes:


    We have now submitted our evidence packs. The Defendant's pack
    contains an element purporting to be an email chain between her
    and the Police in which it is asserted that they are looking for
    me and 'have enough to bring me in for an informal interview'
    and that I am not living at my given address.

    I think the Defendant has either forged it or got a Police
    employee (but not a Constable) friend to collude in the dialogue.

    The email seems to come from a genuine Police domain but she has
    scribbled out the sender's name in the email addresses.

    What is your advice on how to proceed? Are you aware of any
    forensic services that could recover the address (it is scribbled
    out rather photocopied).


    Do you have a printed page that contains the original identitifying
    text which you are seeking to read? In other words, was the scribbling
    done onto the page you have?


    Can I assume that an "evidence pack" is sheets of printed paper?

    It is trivially easy to forge a printout that looks to be an email.

    Any reputable email these days will have headers that include a
    DKIM signature.

    This is a cryptographic signature that validates the body and many
    of the headers, including Subject: and Date: and requires a private
    key associated with the sender's domain to generate.

    See https://en.wikipedia.org/wiki/DomainKeys_Identified_Mail

    I'd ask the court / police to request from the Defendant a full
    digital copy, including headers of the email. Forward as attachment
    should work.

    [TRIMMED]

    Even before we get to proving the existence and validity of the
    actual emails, the evidential value of email correspondence with one
    of the two participant's actual identity not shown must be rather
    low.


    That's what I think. The deliberate obscuring of the name must surely
    be suspicious. If the dialogue was genuine and supported the
    Defendant's claims, it would be in her interest to show that.
    Conversely, I can't think of any good reasons (for her) to conceal
    it.

    Dave

    If the email came from a police domain and was sent on police
    business, then the sender's name can't really be personal data and
    hence something to be withheld under the Data Protection Act.

    It may be worth requesting the obscured information. Even a refusal may
    be useful in diminishing the reliability of the email's contents.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Pamela@21:1/5 to Dave on Wed Apr 30 12:52:37 2025
    On 19:36 29 Apr 2025, Dave said:
    Pamela <uklm@permabulator.33mail.com> wrote:
    On 17:47 28 Apr 2025, Dave said:
    Roger Hayter <roger@hayter.org> wrote:
    On 28 Apr 2025 at 16:41 "Alan J. Wylie"" <alan@wylie.me.uk> wrote:
    Dave <david.christopher.astles@gmail.com> writes:


    We have now submitted our evidence packs. The Defendant's pack
    contains an element purporting to be an email chain between her
    and the Police in which it is asserted that they are looking for
    me and 'have enough to bring me in for an informal interview'
    and that I am not living at my given address.

    I think the Defendant has either forged it or got a Police
    employee (but not a Constable) friend to collude in the
    dialogue.

    The email seems to come from a genuine Police domain but she has
    scribbled out the sender's name in the email addresses.

    What is your advice on how to proceed? Are you aware of any
    forensic services that could recover the address (it is
    scribbled out rather photocopied).


    Do you have a printed page that contains the original identitifying
    text which you are seeking to read? In other words, was the
    scribbling done onto the page you have?

    Yes, she has foolishly scribbled it out on the page she sent me.

    That gives some hope. Discovery of the original text would depend on
    the nature of the two inks.

    I have no experience in this but it's said that viewing the scribbled
    portion in different lights (UV, IR and various narrow-spectrum
    colours, from the front or back) may reveal something. See example
    here:

    "A Simplified Guide To Forensic Document Examination" https://www.forensicsciencesimplified.org/docs/QuestionedDocuments.pdf

    Alternatively, perhaps you could colour scan the document and then
    colour sample only the scribble ink (from a portion where there is no underlying text) and reduce the intensity of only this colour-mix in
    the hope of increasing the visible contrast of the lower layer.

    As a final measure you could undertake a destructive operation such as
    trying to wash away the top layer with water or a solvent. If the
    document is laser-printed the lower layer will be heat-fused toner and relatively resistent to degradation.

    These free documents here have links on the right side: https://scholar.google.com/scholar?q=forensic+document+examination

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Jon Ribbens@21:1/5 to Simon Parker on Wed Apr 30 15:31:22 2025
    On 2025-04-30, Simon Parker <simonparkerulm@gmail.com> wrote:
    As it happens, I've received a few e-mails from GMP in the last few
    days and have had similar e-mails in the past from both GMP and
    Merseyside Police.

    In my experience with those two forces, e-mail address are in the
    format <badgenumber>@<policeforce>.police.uk (so badge number 12345 at Greater Manchester Police will have the e-mail address "12345@gmp.police.uk.invalid" (I've added the invalid at the end for
    obvious reasons.))

    If the e-mail address used is not in this format, it could be a further reason to be suspicious.

    FWIW I have emails from the Met a few years ago and they use or used <firstname>.<lastname>@met.police.uk, or did for CID detectives anyway.

    Additionally, also in my experience, most police forces seem to use
    Microsoft Exchange with ARC configured so it is possible to track the
    mail and authenticate it from the headers.

    That was true for the Met too.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Alan J. Wylie@21:1/5 to Simon Parker on Wed Apr 30 18:36:21 2025
    Simon Parker <simonparkerulm@gmail.com> writes:

    As it happens, I've received a few e-mails from GMP in the last few
    days and have had similar e-mails in the past from both GMP and
    Merseyside Police.

    In my experience with those two forces, e-mail address are in the
    format <badgenumber>@<policeforce>.police.uk (so badge number 12345 at Greater Manchester Police will have the e-mail address "12345@gmp.police.uk.invalid" (I've added the invalid at the end for
    obvious reasons.))

    North Yorkshire Police: firstname.surname@

    https://www.facebook.com/NorthYorkshirePolice/posts/pfbid02Rc4D463FhtV1Yuebt96P81ZZkMCxhhSrN9thGt5KGx1S9skan6RVmCfZzv6nQcVWl

    --
    Alan J. Wylie https://www.wylie.me.uk/ mailto:<alan@wylie.me.uk>
    Dance like no-one's watching. / Encrypt like everyone is.
    Security is inversely proportional to convenience

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Mark Goodge@21:1/5 to jon+usenet@unequivocal.eu on Thu May 1 11:03:51 2025
    On Wed, 30 Apr 2025 15:31:22 -0000 (UTC), Jon Ribbens <jon+usenet@unequivocal.eu> wrote:

    On 2025-04-30, Simon Parker <simonparkerulm@gmail.com> wrote:
    As it happens, I've received a few e-mails from GMP in the last few
    days and have had similar e-mails in the past from both GMP and
    Merseyside Police.

    In my experience with those two forces, e-mail address are in the
    format <badgenumber>@<policeforce>.police.uk (so badge number 12345 at
    Greater Manchester Police will have the e-mail address
    "12345@gmp.police.uk.invalid" (I've added the invalid at the end for
    obvious reasons.))

    If the e-mail address used is not in this format, it could be a further
    reason to be suspicious.

    FWIW I have emails from the Met a few years ago and they use or used ><firstname>.<lastname>@met.police.uk, or did for CID detectives anyway.

    My local force (West Mercia) uses the same format. But there isn't a
    national standard. Individual forces are free to have their own username
    policy which will appear on the email address.

    Mark

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)