File first draft of first incident report (#329)

gratipay · Nov 7, 2012 · a99f4c1 · a99f4c1
1 parent ecc524e
commit a99f4c1
Show file tree

Hide file tree

Showing 3 changed files with 400 additions and 222 deletions.
diff --git a/templates/base.html b/templates/base.html
@@ -39,7 +39,8 @@ <h1>
             <a href='/about/faq.html'>FAQ</a> |
             <a href='/about/stats/'>Stats</a> |
             <a href='/about/charts.html'>Charts</a> |
-            <a href='http://blog.gittip.com/'>Blog</a>
+            <a href='http://blog.gittip.com/'>Blog</a> |
+            <a href='/about/fraud/'>Fraud</a>
         </p>
     </div>
     <script type="text/javascript">

diff --git a/www/about/fraud/2012-11-05.html b/www/about/fraud/2012-11-05.html
@@ -0,0 +1,386 @@
+import locale
+import math
+from collections import defaultdict
+from decimal import Decimal
+
+from aspen import Response
+from gittip import db, CARDINALS
+
+^L
+_suspicious = db.fetchall("""
+
+    SELECT id
+         , balance
+         , ctime
+      FROM participants
+     WHERE is_suspicious
+       AND ctime < '2012-11-05'::timestamptz
+  ORDER BY ctime
+
+""")
+if _suspicious is None:
+    _suspicious = []
+
+
+def suspicious():
+    for person in _suspicious:
+        person['gives_to'] = db.fetchall("""
+
+            SELECT DISTINCT tippee AS id
+                 , is_suspicious
+                 , tips.ctime
+              FROM tips
+              JOIN participants p
+                ON tippee = p.id
+             WHERE tipper=%s
+               AND tips.ctime < '2012-11-05'::timestamptz
+          ORDER BY tips.ctime
+
+
+        """, (person['id'],))
+        person['receives_from'] = db.fetchall("""
+
+            SELECT DISTINCT tipper AS id
+                 , is_suspicious
+                 , tips.ctime
+              FROM tips
+              JOIN participants p
+                ON tipper = p.id
+             WHERE tippee=%s
+               AND tips.ctime < '2012-11-05'::timestamptz
+          ORDER BY tips.ctime
+
+        """, (person['id'],))
+
+        person['transfers'] = list(db.fetchall("""
+
+            SELECT tippee
+                 , tipper
+                 , amount
+                 , timestamp
+              FROM transfers
+             WHERE tipper=%s OR tippee=%s
+               AND timestamp < '2012-11-05'::timestamptz
+          ORDER BY timestamp
+
+
+        """, (person['id'], person['id'])))
+
+        person['exchanges'] = list(db.fetchall("""
+
+            SELECT amount, fee, timestamp
+              FROM exchanges
+             WHERE participant_id=%s
+               AND timestamp < '2012-11-05'::timestamptz
+          ORDER BY timestamp
+
+
+        """, (person['id'],)))
+
+        yield person
+suspicious = list(suspicious())
+names = set([person['id'] for person in suspicious])
+
+total_charged = 0
+total_withdrawn = 0
+gittip_fees = 0
+balanced_fees = 0
+total_escrowed = 0
+total_legit = 0
+total_fraudulent = 0
+
+bystanders = defaultdict(lambda: [Decimal('0.00')])
+
+earliest = None
+latest = None
+
+for person in suspicious:
+    total_escrowed += person['balance']
+    for transfer in person['transfers']:
+        if transfer['tippee'] not in names:
+            total_legit += transfer['amount']
+            bystanders[transfer['tippee']][0] += transfer['amount']
+    for exchange in person['exchanges']:
+        total_fraudulent += 1
+        amount, fee = exchange['amount'], exchange['fee']
+        if amount > 0:
+            if earliest is None or earliest > exchange['timestamp']:
+                earliest = exchange['timestamp']
+            if latest is None or latest < exchange['timestamp']:
+                latest = exchange['timestamp']
+            amount_charged = exchange['amount'] + fee
+            total_charged += amount_charged
+            balanced_fee = (amount_charged * Decimal('0.029')) + Decimal('0.30')
+            balanced_fee = Decimal(balanced_fee)
+        else:
+            total_withdrawn += abs(exchange['amount'])
+            balanced_fee = Decimal('0.25')
+        balanced_fees += balanced_fee
+        gittip_fees += fee - balanced_fee
+assert total_legit == total_charged - total_withdrawn - gittip_fees - balanced_fees - total_escrowed
+
+nweeks = CARDINALS[((latest.date() - earliest.date()).days / 7) + 1]
+
+overall = db.fetchone("""
+
+    SELECT sum(amount + fee), count(amount)
+      FROM exchanges
+     WHERE amount > 0
+       AND timestamp > %s
+       AND timestamp < '2012-11-01'::timestamptz
+
+""", (earliest.date(),))
+overall_volume = overall['sum']
+overall_transactions = overall['count']
+percentage_stolen = (total_charged / overall_volume) * 100
+percentage_fraudulent = (total_fraudulent / float(overall_transactions)) * 100
+
+
+pad = lambda d, n: locale.format("%.2f", d, grouping=True).rjust(n).replace(' ', '&nbsp;')
+
+w = 9
+total_charged = pad(total_charged, w)
+total_withdrawn = pad(total_withdrawn, w)
+gittip_fees = pad(gittip_fees, w)
+balanced_fees = pad(balanced_fees, w)
+total_escrowed = pad(total_escrowed, w)
+total_legit = pad(total_legit, w)
+overall_volume = pad(overall_volume, w)
+percentage_stolen = pad(percentage_stolen, w)
+
+overall_transactions = pad(overall_transactions, w)[:-3] + ('&nbsp;' * 3)
+total_fraudulent = pad(total_fraudulent, w)[:-3] + ('&nbsp;' * 3)
+percentage_fraudulent = pad(percentage_fraudulent, w)
+
+
+bystander_balances = db.fetchall("""
+
+    SELECT id, balance FROM participants WHERE id = ANY(%s)
+
+""", (list(bystanders),))
+if bystander_balances is None:
+    bystander_balances = []
+for row in bystander_balances:
+    bystanders[row['id']].append(row['balance'])
+
+bystanders = sorted(bystanders.items(), key=lambda i: i[1], reverse=True)
+
+fmtdate = lambda d: str(d)[:10]
+
+^L
+{% extends templates/base.html %}
+{% block body %}
+<style>
+    TH {
+        font-weight: normal;
+        text-align: center;
+        padding: 0;
+    }
+    TD {
+        text-align: left;
+        vertical-align: top;
+    }
+    .summary TH {
+        text-align: left;
+        padding-right: 12pt;
+    }
+    .summary B {
+        display: block;
+        padding-bottom: 12pt;
+    }
+    .details TH { vertical-align: bottom; }
+    .details TD { vertical-align: top; }
+    .details TD, .details TH {
+        text-align: left;
+        border-bottom: 1px solid #B2A196;
+        white-space: nowrap;
+        padding: 0pt;
+        font-size: 10pt;
+        line-height: 13pt;
+    }
+    .balance {
+    }
+    .amount {
+        text-align: center;
+        padding-right: 6pt;
+        font-family: Lucida Mono, monospace;
+    }
+    .details .tips,
+    .details .transfers,
+    .details .exchanges {
+        padding-left: 12pt;
+    }
+    .date {
+        font-family: Lucida Mono, monospace;
+        font-size: smaller;
+        color: #999;
+        float: right;
+    }
+    .no-float {
+        float: none;
+    }
+    .suspicious {
+        font-weight: bold;
+        color: red;
+    }
+    .charge {
+        color: red;
+    }
+</style>
+
+<div id="their-voice">
+
+    <h2 class="first">The Delpan Incident</h2>
+
+    <p>Gittip&rsquo;s first <a href="./">fraud incident</a> surfaced when an
+    unknown user named delpan appeared among the top receivers on the site.
+    This page provides data and collects resources related to the incident.</p>
+
+
+    <h3>Status</h3>
+
+    <p>This incident is <b>open</b>.</p>
+
+
+    <h3>Related Resources</h3>
+
+    <ul>
+
+        <li>GitHub ticket: &ldquo;<a
+            href="https://github.com/whit537/www.gittip.com/issues/329">make sure
+            "delpan" is not stealing money :-)</a>&rdquo;</li>
+
+        <li>Blog post: &ldquo;<a
+            href="http://blog.gittip.com/post/35057426257/stolen-money-on-gittip-part-1">Stolen
+            Money on Gittip, Part 1</a>&rdquo;</li>
+
+        <li>Hacker News discussion: &ldquo;<a
+        href="http://news.ycombinator.com/item?id=4743954">Stolen Money on
+        Gittip, Part 1</a>&rdquo;</li>
+
+        <li>Vice Motherboard: &ldquo;<a
+        href="http://motherboard.vice.com/2012/11/6/thieves-launder-money-by-crowdfunding-themselves--2">Thieves
+        Launder Money by Crowdfunding Themselves</a>&rdquo;</li>
+
+        <li>Secure Computing Magazine: &ldquo;<a
+        href="http://www.scmagazine.com.au/News/322118,fraudsters-launder-cash-though-grants-startup.aspx?utm_source=feed&utm_medium=rss&utm_campaign=SC+Magazine+All+Articles+feed">Fraudsters
+        launder cash though grants startup</a>&rdquo;</li>
+
+    </ul>
+
+</div>
+
+
+<h3>Summary</h3>
+
+<p>The fraudulent credit card transactions associated with this incident
+occured over a period of <b>{{ nweeks }} weeks</b>, from
+{{ earliest.strftime("%B %d") }} to {{ latest.strftime("%B %d, %Y") }}.</p>
+
+<table class="summary">
+    <tr><th>Withdrawn to a Bank Account</th>
+        <td class="amount">${{ total_withdrawn }}&nbsp;</td></tr>
+    <tr><th>Given to Innocent Bystanders</th>
+        <td class="amount">${{ total_legit }}&nbsp;</td></tr>
+    <tr><th>Still Escrowed in Gittip</th>
+        <td class="amount">${{ total_escrowed }}&nbsp;</td></tr>
+    <tr><th>Fees - Balanced</th>
+        <td class="amount">${{ balanced_fees }}&nbsp;</td></tr>
+    <tr><th>Fees - Gittip</th>
+        <td class="amount">${{ gittip_fees }}&nbsp;</td></tr>
+    <tr><th><b>Total Stolen</b></th>
+        <td class="amount"><b>${{ total_charged }}&nbsp;</b></td></tr>
+    <tr><th>Overall Volume</th>
+        <td class="amount">${{ overall_volume }}&nbsp;</td></tr>
+    <tr><th><b>Percentage Stolen</b></th>
+        <td class="amount"><b>&nbsp;{{ percentage_stolen }}%</b></td></tr>
+    <tr><th>Total Credit Card Transactions</b></th>
+        <td class="amount">&nbsp;{{ overall_transactions }}&nbsp;</td></tr>
+    <tr><th>Fraudulent Transactions</th>
+        <td class="amount">&nbsp;{{ total_fraudulent }}&nbsp;</td></tr>
+    <tr><th><b>Percentage Fraudulent</b></th>
+        <td class="amount"><b>&nbsp;{{ percentage_fraudulent }}%</b></td></tr>
+</table>
+
+
+<h3>Innocent Bystanders (N = {{ len(bystanders) }})</h3>
+
+<p>These people inadvertently received stolen money as part of this
+incident.</p>
+
+<table class="summary">
+    <tr><th></th><th>Received</th>{% if user.ADMIN %}<th>Balance</th>{% end %}</tr>
+    {% for name, (amount, balance) in bystanders %}
+    <tr>
+        <th><a href="/{{ name }}/">{{ name }}</a></th>
+        <td class="amount">${{ pad(amount, 9) }}</td>
+        {% if user.ADMIN %}<td class="amount">${{ pad(balance, 7) }}</td>{% end %}
+    </tr>
+    {% end %}
+    <tr>
+        <td><b>Total</b></td>
+        <td class="amount"><b>${{ total_legit }}</b></td>
+        {% if user.ADMIN %}<td></td>{% end %}
+    </tr>
+</table>
+
+
+<h3>Suspicious Accounts (N = {{ len(suspicious) }})</h3>
+
+<table class="details">
+    <tr>
+        <th></th>
+        <th class="balance">Balance</th>
+        <th class="tips">Tip Graph</th>
+        <th class="transfers">Transfers</th>
+        <th class="exchanges">Exchanges &amp; Fees<br />
+        <span class="help">Negative means bank deposit,<br />positive means credit card charge</span></th>
+    </tr>
+    {% for row in suspicious %}
+    <tr>
+        <td><a href="/{{ row['id'] }}/">{{ row['id'] }}</a><br />
+            <span class="date no-float">{{ fmtdate(row['ctime']) }}</span></td>
+        <td class="balance amount">{{ pad(row['balance'], 5) }}</td>
+        <td class="tips">
+            {% for person in row['gives_to'] %}
+                &rarr;<a href="/{{ person['id'] }}/"{% if person['is_suspicious'] %} class="suspicious"{% end %}>{{ person['id'] }}</a><br />
+            {% end %}
+            {% for person in row['receives_from'] %}
+                &larr;<a href="/{{ person['id'] }}/"{% if person['is_suspicious'] %} class="suspicious"{% end %}>{{ person['id'] }}</a><br />
+            {% end %}
+        </td>
+        <td class="transfers">
+            {% for transfer in row['transfers'] %}
+            {% if row['id'] == transfer['tipper'] %}
+            <span class="amount">{{ pad(transfer['amount'], 5)}}</span>&rarr;
+            <a href="/{{ transfer['tippee'] }}/"{% if transfer['tippee'] in names %}
+                class="suspicious"{% end %}>{{ transfer['tippee'] }}</a>
+            {% else %}
+            <span class="amount">{{ pad(transfer['amount'], 5) }}</span>&larr;
+            <a href="/{{ transfer['tipper'] }}/"{% if transfer['tipper'] in names %}
+                class="suspicious"{% end %}>{{ transfer['tipper'] }}</a>
+            {% end %}
+            <span class="date">
+                {{ str(transfer['timestamp'])[:10] }}
+            </span>
+            <br />
+            {% end %}
+        </td>
+        <td class="exchanges">
+            {% for exchange in row['exchanges'] %}
+            <span class="amount{% if exchange['amount'] < 0 %} charge{% end %}">
+                {{ pad(exchange['amount'], 6) }}
+                {{ pad(exchange['fee'], 4) }}
+            </span>
+            <span class="date">
+                {{ str(exchange['timestamp'])[:10] }}
+            </span>
+            <br />
+            {% end %}
+        </td>
+    </tr>
+    {% end %}
+</table>
+<br />
+<hr />
+{% end %}